Wideband Delphi is a consensus-based estimation process developed in the mid-20th century by the RAND Corporation, a nonprofit think tank. However, this modified Fibonacci sequence in Agile estimation world is 1,2,3,5,8,13,20,40…. The choice of a specific. In planning poker, members of the group make estimates by playing numbered cards face-down to the table, instead of speaking them aloud. The number of "Effort Points" for each PBI - Your team should determine the number of Effort Points for each of these PBIs using an arbitrary scale (like a modified Fibonacci sequence). Story points are often assigned using the Fibonacci numbers (1, 2, 3, 5, 8, 13, 21, etc. Evaluating something with 40 or 100 is similar to asking a question or skipping a task from a current PI cycle. According to Oxford dictionary, Fibonacci Series is : “ a series of numbers in which each number ( Fibonacci number ) is the sum of the two preceding numbers. The user stories will be filled in on the right. By defining story points, product teams can estimate velocity and project the quantity of work that can be completed within the specific 2–4 week period known as sprint or cycle. 5, 1, 2, 3, 5, 8, 13, 20, 40, 100. Here are some important factors to reach strong Sprint Planning outcomes: The Product Owner is able to explain how the Sprint could best contribute to the Product Goal. 4 points per person-hour. Select ClickApps. The team feels comfortable when using Fibonacci sequence because they understand the scale’s values. That’s a bad rule of thumb. Scrum - Estimation. Does the use of the Fibonacci Series - in Agile Estimating and Planning - lead to more ACCURATE estimates?Download your FREE CHEAT SHEET: Point. A table describing the various physical sizes of walls to paint. Scrum is not a one-size-fits-all solution, a silver bullet or a complete methodology. It's a useful way to work towards a consistent sprint velocity. What is. Story pointing is a quick way to estimate work using tools like Planning Poker or the Fibonacci model. This can help the teams to embrace Relative Estimation. Many agile teams use story points as the unit to score their tasks. Sprint Velocity. Just to review, here is what the sequence looks like for estimating user stories in story points: For the math geeks out there, you probably. release planning)? I don't use story points for sprint planning because story points are a useful long-term measure. This sequence, known as the Fibonacci sequence, is utilized as a scoring scale in Fibonacci agile estimation. Conforme você avança na escala, os números vão aumentando muito rápido. Why It's a Problem: Changing story point estimates during a sprint can distort the sprint's velocity and make it difficult to plan future sprints. Story Points typically are listed in a Fibonacci type of sequence (i. This way I can easily manage 2 sub tasks (with its own story points) without affecting the total story points I took for the bigger task in a sprint (which was 21 in this. If the story received 5 points on a Fibonacci scale, then you would compare it to stories your team estimated for 3 and 8 points, respectively. Take all the backlog items you’ve determined to be part of the sprint goal and announce them one at a time. People want an easy answer, such as “one story point = 8. Essentially, the Agile Fibonacci scale gives teams a more realistic way to approach estimates using story points. 2 story points= Medium complexity. Story point estimation is the process of assigning story points to a product backlog item or a user story. One commonly used method during the estimation process is to play Planning Poker® (also called Scrum Poker). To help gauge the number of story points. (opens in a new tab) The sequence is made of numbers that form a pattern, which is 0,1,1,2,3,5,8,13,21,34 and so on. Some teams use Fibonacci sequence i. 1st – eight points. The story points to hours conversion is just for estimation. What matters are the relative values. To select a point system, the team looks at the list of available options and selects one that feels comfortable. According to Oxford dictionary, Fibonacci Series is : “ a series of numbers in which each number ( Fibonacci number ) is the sum of the two preceding numbers. They are non-linearFibonacci numbers are non-linear in nature, which reduces the. Agile Tools by Corrello allows you to add story points and WIP Limits to Trello. If the team wants to map the sizes to a number system (to calculate velocity or the number of points they can close per Sprint), they simply replace small with 1 and medium with 2 and so on. A one-point story may have a greater value to the stakeholder than a five-point story. The Fibonacci sequence is the go-to solution for many Scrum teams because it allows for relative sizing while still being a numeric measurement. A user story that is assigned two story points should be twice as much effort as a one-point story. The team velocity is the number of story points that the Scrum team actually completes in a Sprint. Let’s present each of these in detail. The Fibonacci scale was first documented in the Middle Older, but several agile teams use it today to estimate how points. The idea is simple enough. Agile has always focused on the collaborative ways of working, and the same principle is applied in the estimation. Two story points, for example, equate to a work that will take 2-4 hours, whereas three story points go to issues that will take 4 to 8 hours, and so on. De forma parecida, a escala de Fibonacci força seu time a fazer uma escolha. It seems the locked Story Points field is the only one that feeds into reporting and displays on the issue cards when viewing all issues in aggregate (for example, in the backlog or in the active sprint). and is the perfect Power-Up for Scrum or Kanban teams using Trello (or even teams blending a mix of. Choose additional settings:This is exactly the reason why the story point scale uses the Fibonacci sequence or a close approximation:. The estimators discuss the feature, asking questions of the product owner as needed. ”. This is my idea : =< 1h -> 0,5 point. Story pointing using Fibonacci. Fibonacci has become one of the most popular story point scales for agile teams because it helps team members create more accurate. Fast estimation. The Fibonacci sequence is one popular scoring scale for. Then, look at the number of stories completed and add up the points. ” For these reasons, agile teams should estimate their workloads using story points instead of hours. Scrum poker, also known as “planning poker” and “pointing poker”, is a gamified technique that development teams use to guess the effort of project management tasks. While in traditional project management methods the effort is conveyed in a time format like days, weeks or months, Agile uses story points to provide estimates and these can be. This is as much wrong as it could get. Using Fibonacci series numbers, we estimate points. In the next sprint we do the same, comparing every story with the first story of the first sprint. For three story points, the number of hours might be 5 to 10 hours. Step #4: When asked by Tia, each. You will never struggle on questions like “Is it 4 or 5 hours” – in Fibonacci there is no 4 only 1 2 3 5 8 13 21 and so on. Parametric. Accept two 20. An example story point scale might be a modified Fibonacci sequence (1, 2, 3, 5, 8, 13, 20) or a simple doubling of numbers (1, 2, 4, 8, 16, 32…). It’s the total completed story points divided by the total number of sprints. Agile Mentors Community Gets Real about Story Points and Fibonacci. org uses the fibonacci sequence (1,2,3,5,8,13,21) to estimate stories. The idea is simple enough. 2. To play, follow these steps: Give each team member cards with the numbers 1-10 printed on one side. Agile story points enable another valuable tool for teams to continuously improve their estimation process — metrics. The Fibonacci sequence is often used for story points. Question 18) Fill in the blank: When a team conducts Sprint Planning, they use the average velocity of _____ to determine how many items they can safely add to their Sprint Backlog. 1. 46368. It helps people understand the scope of the work they plan to do in a sprint. When the meeting starts, Tia hands out the deck of cards to each estimator or each estimator opens the planning poker card app on their smartphones. Complex tasks are assigned more Agile story. It is similar to a regular qualifying session with a few changes; Q1, Q2. If this refers to the remaining work field, you want to replace this with story points. Why use Fibonacci for story points? Story points represent the complexity, size, and effort required for achieving or implementing a user story. To calculate the story points, you should use a technique called planning poker. Total number of story points completed in a sprint determines the sprint velocity. When we use the Fibonacci series in estimating these gaps represent increasing uncertainty as user stories get larger. ”. Related Terms. Coming back to Fibonacci sequence in this series of numbers, an accurate estimate would be 1, 2, 3, 5, 8,13,21,34,55…. Our next objective is to understand how many of these items can be done within the next work period. In fact, there is a very simple exercise that can be used to reveal this paradox. For estimating the time it takes to complete tasks, you want a scale that is made of integers. The choice of a specific number from this sequence reflects the amount of uncertainty. Choose a story point scale. While development teams commonly adopt the Fibonacci series, alternative options also exist. In preparation for round two of the Team Estimation Game, Frank produces a deck of Fibonacci cards. 500, 0. In agile scrum, this translates to knowing the team's velocity. When the development team conducts an estimation, it is recommended to abandon the traditional “human-day” assessment method, using the point of the story point, using the Fibonacci number (1, 2, 3, 5, 8, 13, 21…) to estimate the story. The Fibonacci sequence is a mathematical series of numbers that was introduced in the 13th century and used to explain certain formative aspects of nature, such as the branching of trees. In his article on why Story Points are better than hours he puts it like this: Story points are therefore faster, better, and cheaper than hours and the highest performing teams completely abandon any hourly estimation as they view it as waste that just slows them down. Given that, it seems that creating an additional custom field for Story Points does not have the same impact as using the default locked version. 75025. LOE points are entered for stories via the story grid or a new story panel. Choose additional settings: Rollup Sprint Points: Display the combined total of points from both the parent task and any subtasks. Since each sprint lasts two weeks, it will take 10 more weeks to complete the release. When a team comes up with a story point estimate, ask them for a confidence level. This is the team velocity!Mais pas n’importe quels points : ce sont les premiers éléments de la suite de Fibonacci, suite d' entiers dans laquelle chaque terme est la somme des deux termes qui le précèdent : 0, 1, 2. Say I assigned 21 story points to a task. But, by the time a feature or set of stories are ready to be formed into a sprint, make sure they’re all broken down and decomposed into very manageable sizes (1s, 2s, 3s). Scrum, Fibonacci, Power Of Two and T-Shirt Card Decks; Unlimited Participants; Free Trial Sign Up. Mike Cohn (the author of the story points concept) advises having teams estimate with a modified Fibonacci sequence of 1, 2, 3, 5, 8, 13, 20, 40, and 100. T-shirt Sizing is one of the Story points sizing technique to estimate user story usually used in agile projects. They estimate the product backlog grooming before sprint planning occurs to ensure that the process is highly efficient. James Grenning, an author of “ The Manifesto for Agile Software Development ,” refined the Wideband Delphi technique in 2002 and renamed it to Planning Poker. Each team member brings a different. 000, 1. We're one of the fastest growing power-ups of 2022. The name from this gamified technique is planning poker because participants use physical cards. Developers use a fibonacci sequence: 0, 0. Five days into a ten-day sprint, you might still have 20 points remaining as “unfinished” on the sprint board. Demark Pivot Points were. People often ask me, “How do you move from estimating in time to estimating in complexity? A simple way to start using Fibonacci and story points is: 1. Use 12 story points per sprint as their estimated velocity. Agile teams discuss upcoming tasks and assign points to each one using the Fibonacci scale to prioritize tasks to be included in the next sprint. With this, we are exploring the option of making this field a drop down with the Fibonacci values. These Planning Poker cards display values like 1, 2, 3, 5, 8, 13, 20, 40 and 100 (the modified Fibonacci sequence). As the name implies, this agile estimation technique uses t-shirt sizes: Extra Small, Small, Medium, Large, Extra Large or S, M, L, XL. Agile Scrum is based on. It was then refined even further and. Most teams. Team's composition should remain stable for a sufficiently long. The Fibonacci story point variation starts with 0 and typically ascends no higher than 21. The higher the number of points, the more effort the team believes the task will take. Our Agile/Scrum team follows the Fibonacci sequence for story point estimation. ; Choose additional settings: Rollup Sprint Points: Display the combined total of points from both the parent task and any subtasks. Over time, the teams have moved on from traditional estimation techniques like estimating in hours and using bottom-up and top-down approaches to new estimation methods like guessing the size. It encourages breaking down work into smaller chunks (preferably achievable within a sprint). Story points along with sprint velocity provide a guideline about the stories to be completed in the coming sprints. Agile teams typically use the Fibonacci Sequence, a variant of it, or T-shirt sizes. A sprint goal is created and finalized by the entire Scrum team ( Scrum Master, product owner and developers) during sprint planning, and helps communicate why the sprint is valuable to stakeholders. Teams use this sequence, rather than a linear 1 – 10 as it forces them to provide a relative estimate. One commonly used method for the estimation process is to play Planning Poker® (also called Scrum Poker). Estimation is relative to already completed product backlog items in the first sprint. Complex tasks are assigned more Agile story. issues. Agile teams discuss upcoming tasks and assign points to each one using the Fibonacci scale to prioritize tasks to be included in the next sprint. everyone) on the team is key. 15. الفائدة الرئيسية لتطبيق مقياس Fibonacci في البيئات رشيقة هي كيفية قيامها بإنشاء مساحة لأعضاء الفريق ومديري المشاريع إلى إلقاء نظرة واقعية على الجهود المطلوبة لإكمال كل مهمة في دورة Sprint. Developers use a fibonacci sequence: 0, 0. For a team of 7 developers you would have over 20-40 user stories which is likely way too many. On our Scrum Teams, we almost always start Sprint Planning by reminding ourselves of and talking about the Product Goal. For instance, the difference between 3 and 5 is 2, while the difference between 5 and 8 is 3. Complex tasks are assigned more Agile story. 000, and 2. 5, 1, 2, 3, 5, 8, 13, 20, 40, 100, as a metric to measure story points in order to force teams to come to clear decisions. Teams use this sequence, rather than a linear 1 – 10 as it forces them to provide a relative estimate. By measuring sprint velocity – the average number of completed points during previous sprints – and using that number as a limit for the next sprint, teams set a healthy and sustainable working rhythm. For our imaginary team, the story point sequence will mirror the classic Agile methodology adaptation of Fibonacci: 0, 0. Free-scale slider voting allows arbitrary estimation. Agile teams discuss upcoming tasks and assign points to each one using the Fibonacci scale to prioritize tasks to be included in the next sprint. That’s okay. 618. The Jira story points are considered Fibonacci because the sequence is a quick and easy way to estimate the effort required for a task. Planning Poker using Fibonacci sequence (1, 2, 3, 5. Try Sprint Poker for Better My Point Estimates. The idea is simple enough. As the. Each story point is assigned a number from the Fibonacci scale. The 13-point card should be used for any story the team estimates larger than 8 and no larger than 13. So, I can create 2 sub-tasks with story points 8 and 13. Search for Sprint Points and click the toggle to turn it on. Common estimating methods include: Numeric sizing (1 through 10) T-shirt sizes (XS, S, M, L, XL, XXL, XXXL) Dot Voting. Click your Workspace avatar. 2. 3. This means having sample tasks that correspond to each point according to our Fibonacci sequence: 1 point: A copy change. The art of Fibonacci estimation is to use the sequence as a scoring sale when estimating the effort of various agile development tasks. 5, 1, 2, 3, 5, 8, 13. Some crude math suggests that Fibonacci is about 4 times more precise than this timeframe approach (62% ratio vs 15% ratio on average). These estimations are based on the entire group’s input and consensus, making them more engaging and accurate than other methods. 3 hours. With the Fibonacci sequence, gaps get larger as you progress up the series. What is the Fibonacci scale? The Fibonacci sequence contains numbers that exhibit exponential growth, where each number is the sum of the two previous ones. -1 story point for your team might not equal the same amount of effort involved in 1 story point for another team. It's a useful way to work towards a consistent sprint velocity. Then what you need is not display the remaining work field , you can set it up in settings. Scrum story points are considered to be more accurate than estimating in hours. Typically, numbers from the Fibonacci sequence (1, 2, 3, 5, 8,…) are used for this purpose. Story points are often used in a modified Fibonacci sequence to indicate the higher variance with larger efforts. j = n/2 – 1. While you could use a different scale for estimating tasks, such as 0-1 or shirt sizes (XS, S, M, L, XL), the Fibonacci scale is a better choice for 5 reasons: 1. The Fibonacci series also better represents the fact that uncertainty grows proportionally with the size of the story. Some crude math suggests that Fibonacci is about 4 times more precise than this timeframe approach (62% ratio vs 15% ratio on average). Sprint velocity and other key metrics 📈. Pick a task you consider medium complexity and. 12 Common mistakes made when using Story Points And the points-based folks broke things down into smaller chunks compared to those who used t-shirt sizing buckets by using hours and days as their time metric with no mention of weeks. Story points or Fibonacci numbers mean amount of days, either directly or indirectly, via various transformations. Moreover, the Fibonacci sequence has a varying distance between Story Points. So 5 is the sum of 3 + 2, 21 is the sum of 13 + 8, and so forth. One of the concepts new scrum teams struggle with is how to relate story points and hours. Let F be the 46^ ext {th} 46th Fibonacci number. Chuỗi Fibonacci cho Story Point: Một khi nhóm quyết định lập kế hoạch theo thang điểm, nhóm cần thống nhất và quyết định sẽ. 618, 2. 2. Who Fibonacci scale was first documented in the Middle Ages, but many agile teams use it available for estimate story points. They also measure the efforts required to complete a specific story. Story points force teams to decide which items to prioritize, which to split. There are different scales you can use, such as Fibonacci (1, 2, 3, 5, 8, 13. Utilisez des modèles pour la planification de sprint et les story points; Modèles. Let’s say the team is debating over a user story. If team members were taking additional days off, the capacity would be adjusted. For story points, you will use the average velocity of the last 3 (or 6 or. The team can then start estimating other user stories by comparing them to the reference user story. These. Essentially, the Agile Fibonacci scale gives teams a more realistic way to approach estimates using story points. (From the Scrum Guide: “The Product Owner proposes how the product could increase its value and utility in the current Sprint. Teams generally estimate in “relative complexity”. As for sub-tasks moving between sprints, they technically don't, individually. The Pros and Cons of Using Story Points in Sprint Planning. Say I assigned 21 story points to a task. Modified Fibonacci Sequence. 1 – Quick to deliver and minimal complexity. The driver who finishes in first place during the sprint race gets 8 points, number 2 gets 7 points,. We estimate stories like below-: 1 story point= Simple. Points per sprint are often represented using a numerical scale, such as the Fibonacci sequence (1, 2, 3, 5, 8, 13, etc. Choose reference stories. Complex tasks are assigned more Agile story points, while smaller tasks. The rest of the work is calculated based on this. And the team continues like that and pulls more user stories for next sprints and delivers them. It also subtly takes the focus off of swarming and puts attention toward a developer per story. A Story point is a unit of measure for expressing an estimate for the overall effort needed to complete a particular user story, sprint, or product backlog item. James Grenning, an author of “ The Manifesto for Agile Software Development ,” refined the Wideband Delphi technique in 2002 and renamed it to Planning Poker. Type of work team strives to do during sprints remains similar. Even set custom colors, if you like. Step 1 — Use Fibonacci sequence numbers. 5 story points= Complex but can be completed in 1 sprint. First, Minor applies Fibonacci Time-Cycle Ratios to the time duration of the latest completed price swing, using both trading days and calendar days. 2. Agile teams discuss upcoming tasks and assign points to each one using the Fibonacci scale to prioritize tasks to be included in the next sprint. The team selects an item from the product backlog, discusses it briefly, and then each team member holds up a card with a number corresponding to their estimate. Teams use Planning Poker to agree on Story Point numbers for items on their Backlog. 5, 1,2,3, 5, 8, 13, 20,40,100. 645 (n*0. We use planning poker, and we use the Fibonacci sequence for actual story points, meaning the effort needed to complete the story. ; Enable Sprint Points. Another thing that stuck out to me is that you said one person was doing the estimation. This is handy because they can all have a relative size to each other — something assigned a 4 will be twice as hard as a 2 , and so on. Story points also consider that not every team member works the same way — one employee could require a day to complete a certain task, while. Which makes any Scrum Master interview a challenging task. 3 hours. 5 points: Implementing a feedback formAgile estimation has several methods, including story points, t-shirt sizes, and ideal hours or days. Additionally, our tool provides a Fibonacci range for estimated points, allowing your team to easily choose a suitable value within your own scale. Comments (26) The first two numbers in the sequence are 1 and 1. Continuing in this fashion you obtain the following Fibonacci Sequence:" I don't understand. Here’s how it works: -Each story is assigned a certain number of story points. Create a custom estimation scale: Use letters, numbers or even emoji to make a scale that works for you. however the industry standard and to keep the practice uniform within, team, organization, or even in the Agile world we use the points in Fibonacci series i,e, 1,2,3,5,8,13,21,…Fibonacci series numbers have relative differences from each other. The simplest is the series 1, 1, 2, 3, 5, 8, 13, 21, 34, 55, 89, 144 etc”. There’s many good reasons why so many scrum and agile teams are adopting story points. If the team completes 10. The traditional approach is to estimate using a “bottom-up” technique: detail out all requirements and estimate each task to complete those requirements in hours/days, then use this data to develop the project schedule. Thang điểm phổ biến nhất được sử dụng cho các điểm câu chuyện là dãy Fibonacci (1, 2, 3, 5, 8, 13, v. Mathematically: . The y-axis is the number of points in the sprint, and the x-axis displays time in the sprint. Adjusting Story Point estimates of issues during the Sprint. Scenario 3: Estimation based on hour-to-story points conversion. . The points increase significantly relative to an increase in complexity and uncertainty. The team gets better at using the scale as long as they use the scale consistently. Th Fibonacci sequence used in story points helps drive quick estimations since it. Sure, they. Begin Planning;. I'm the Scrum master of a dev team using hours to estimate PB items. So the sequence will be 0. “We use Jira to track all of our stories. 5, 1, 2, 3, 5, 8, 13, 20,. The segment AB is a retracement. You may assign point values using consecutive whole numbers or the Fibonacci sequence, which is more popular because it leaves room for approximation. Story points are units of measure for expressing an estimate of the overall effort required to fully implement a product backlog item or any other piece of work. In fact it grows as a logarithmic function. ). Add a new animation to the drop-down menu is 2 story. The ideal work remaining line connects the start. The team's velocity is 20 story points/sprint. Use one of three default scales for estimating Story Points: Fibonacci sequence, 5 fingers and t-shirt sizes. Everyone will have a set of cards to denote each number on the Agile Fibonacci sequence: 1, 2, 3, 5, 8, 13, 20, 40, and 100. Story points in Scrum often use a standard or modified Fibonacci sequence to estimate the level of effort for stories based on some agreed-upon baseline such as a "typical" one-point story. Any number in the sequence is the sum of the two that came immediately before it. For velocity to make sense. Tip: It's common to use linear values (1,2,4,8) or Fibonacci (1,2,3,5,8). Assume, we arrive at a stable velocity of 110 story points per 22 working days sprint for a development team of 5 members. Chẳng hạn ví dụ đã nêu trên, một item bạn cho rằng size 10 point và vì bạn dùng dãy Fibonacci làm các xô chứa, bạn sẽ chọn cho item này xô chứa 13-point. From the Sprint Points modal, click Point Values and edit, delete, or add a new set of numbers. In the next sprint we do the same over and over again. There’s also the T-Shirt Sizes scale and the Five Fingers scale. Story points != time is good because it automatically accounts for “other things” that use up time within a sprint, beyond your -1day example for the ceremonies. (especially if limited to a particular number of story points in a sprint), and so some work gets unnaturally split apart. The traditional Fibonacci series is 1, 2, 3, 5, 8, 13, 21, 34, 55 and so on. Enable Sprint Points. Sprint velocity is the number of story points that can be completed during a sprint by a specific team. If you’ve ever done agile estimating with story points or used Planning Poker ®, you may have used either the Fibonacci sequence or a modified Fibonacci sequence. Your team has committed to eight user stories, and each story equals three story points. Story points can be used in agile methodologies like scrum during sprint planning by assigning a point value to a user story. Story points also provide a metric known as velocity, which is the number of points implemented per sprint. Too big user stories are not recommended. Story Points Scale. What is the Fibonacci scale? The Fibonacci sequence contains numbers that exhibit exponential growth, where each number is the sum of the two previous ones. 1. Some of the most common Fibonacci numbers watched by traders include the 38. The Fibonacci scale is a series of exponentially increasing numbers used to estimate the effort required to complete a task or implement a user story . I'd take a different approach to estimate within a sprint -- either hours to enable capacity planning, or Story Points for team velocity, or #noEstimates for Kanban or even Scrum. Scrum is intended asa simple, yet sufficient framework for complex product delivery. When a team comes up with a story point estimate, ask them for a confidence level. This. To enable Sprint Points for your Workspace: Click on the avatar in the lower-left corner. They may both take the same amount of time to complete the work item. Once you’ve completed your agile estimation meeting, Parabol will automatically sync estimated user stories back to the backlog, ready for sprint planning. the complexity of the product’s features. The story points simply represent categories of effort. So, I can create 2 sub-tasks with story points 8 and 13. Fibonacci sequence numbers (0. You may wonder what Fibonacci has to do with agile? The most common estimation method is story points, a technique based on the Fibonacci sequence. La suite de Fibonacci agile donne aux équipes une façon plus réaliste d’aborder les estimations à l’aide de story points. Scrumpoker-online. The Fibonacci sequence is a series of numbers that grow because each number is the sum of the previous two numbers. Know how you measure effort: story points vs. Agile teams usually define their points using the Fibonacci sequence (1, 2, 3, 5, 8,. It should be used to describe relative complexity but still 8 story-points can mean something between 6-12 (Fibonacci) story points in reality so saying that 8 story-points equals to 4 days is really dangerous because it can be also 3 or 6 + "waste" (overhead) in initial sprint. One of the reasons behind the story point inflation is the pressure being put on teams to deliver more points with each Sprint. Agile teams often use the Fibonacci sequence to estimate the “size” of tasks and user stories for their upcoming sprint. That means it is a measure that can’t be used across Scrum teams.