Questions tagged [estimation]

For questions about the estimation of the project's parameters, such as time or cost.

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6answers
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As a project manager how worthwhile is it to have 50/50 estimates of certain metrics?

I was reading Steve Tockey's book Return on Software and he mentioned it's quite beneficial to have such estimates. Let's say I have an oracle that spews out 50/50 estimates of cost/schedule/budget/...
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3answers
73 views

When is user stories estimation supposed to take place?

I would like to know when the estimates are supposed to be produced. Last time I was part of a Scrum team, I think we were providing initial estimates (that would then be quickly reviewed and ...
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1answer
64 views

How to treat users stories which were almost completed at the previous sprint? [duplicate]

How to treat users stories which were almost completed at previous sprint but didn't meet Definition of Done due to testers were late for some reason. Suppose one of those stories was 5 story points, ...
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2answers
31 views

When choosing the largest and smallest stories in a backlog for estimation how does it impact each sprint?

An article I came across suggested that we should pick the largest and smallest story in the prioritised backlog and relatively estimate the remaining stories. This makes sense. However, I was ...
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2answers
370 views

How to handle large R&D projects using Scrum (or any other agile framework)

In addition to our regular software development tasks we have some large R&D tasks which we find difficult to fit into our scrum framework. The main issue is that there is absolutely no user ...
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2answers
492 views

Why in PERT the activities duration follows a Beta distribution

studying the details of PERT/CPM, I'm perplexed when I read the formula of duration of an activity is expected time = (opt. time + 4medium + pess. time) ÷ 6 because it's following a Beta ...
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5answers
77 views

Determining the best task average

What is the best way to determine a weighted average for the actual time spent on historical tasks. Let's say for example each project has a task A. And task A varies in time spent depending on ...
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2answers
625 views

Function Point value, which is better

Based on FP table here: http://www.qsm.com/resources/function-point-languages-table Here are average FP value for 3 different languages Java --> 53 J2EE --> 46 .Net --> 57 As I understand the FP ...
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4answers
685 views

Estimation and testing in project management

I'm currently writing a paper regarding project management, and was wondering if anyone with experience could answer the following questions? What are the steps involved in creating a testing process?...
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1answer
83 views

Estimating Fixed Price Project Cost Payments via Monthly Milestones

I have spent the last few days searching for an answer on how to use MS Project (2010 in my case) to estimate a project's cost via milestones that are split along a long program (2.5 years). The ...
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1answer
65 views

How to estimate the value of software for a control system?

Control systems are like computers, but sometimes less so. For the current discussion, it can be assumed that some custom effort maybe needed to make the same code work on different platforms. With ...
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3answers
209 views

How to estimate number of resources when I have my timelines fixed, but work effort is more

My total work estimate is 1056 man days Release Start time: May 10 Release End time: October 10 total Work days available: 101 1056 / 101 = 11 resource Approx. Is this correct calculation? If not ...
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1answer
820 views

Can machine learning be used for capacity planning?

As a team, we currently use a simple mathematical model for planning the size of future releases (in story points). I am looking to overhaul this at the moment so that it more accurately reflects what ...
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1answer
87 views

Gantt charts with ranged estimates?

I'd like to create Gantt charts with ranged estimates (for reporting to non-technical execs) but don't want to use a web service (LiquidPlanner). How can I get Gantt charts with range estimates?
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1answer
152 views

help using ROI/NPV to justify a project that allows you to sell more

We want to get a project justified, using ROI and/or NPV, but it seems to be difficult: We are a company that sells products on our internet site, and now we want to implement a system that give ...
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5answers
251 views

Should I remove distraction time from developers' capacity time while giving time estimation?

I am about to give new estimations of a project delivery time, estimating iterations etc.. Besides development, developers spend much time on distractions. By distractions I mean everything(tea, ...
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6answers
942 views

Velocity of the team

If i have been provided with the information of six sprints having story points like 20,21,22,23,24,25,26 then what should be the velocity of the team ?
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3answers
376 views

How can I convince my team that they delays are inevitable and that they need to hustle in order to actuall get done on time?

Sometimes I have teams that think there is little point to being ahead of schedule. I try to convince them that things will inevitably come up that will take up precious time to sort out, so we need ...
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4answers
2k views

How can we transition to Agile estimation based on complexity or effort of user stories?

We have being practicing agile development methodologies for a long time as a development company. Most of the time our product owners tries to have a map between story points and time. As a example, ...
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3answers
4k views

What is “Lead Time”?

I have a task within my project criteria which states: "Purchasing lead-time for the steelwork is estimated at 60-80 days". What does lead time mean? Do I have to make special considerations for this?...
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4answers
1k views

How do you measure time units in sprint velocity?

I am trying to get my head around "Story points" using the Scrum methodology. As a starting point, I have been following the following article: http://scrummethodology.com/scrum-effort-estimation-and-...
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2answers
213 views

What's a good way for a Scrum team to handle budgets and work with other departments?

In my organization, the developers are using Scrum (which started recently), but the sysadmins are not. We're about to start a large project, and we've been asked for detailed description of our ...
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3answers
578 views

What's the best way of writing user stories about “improve this metric” if I'm not sure how much improvement is possible?

Say you have a piece of software that you know can be improved on various quantifiable metrics (time to boot, CPU and memory usage, latency for various actions, accuracy of recognition tasks, etc.), ...
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5answers
1k views

First sprint: Epics chosen instead of stories - should I re-estimate and when?

I am trying out Scrum on a small, one-person project. During my first sprint, I realized that all of the stories I've chosen are really epics and should be broken down into much smaller pieces. The ...
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4answers
3k views

Effort vs (Size, Productivity, Duration)

Well, this metric is causing some troubles in my head. As far as I understood, its magnitude is: man/hour. So for example, if in a project I put two employees working, the effort would be: 2 man/hour....
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3answers
102 views

Estimate depending work items in Scrum

Scenario: Let's say there are two items A and B in the product backlog of a Scrum team. From a PO point of view B has more customer value than A and is therefore ranked higher. When asking a developer ...
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3answers
73 views

Stakeholder view of projects without time?

I'm a PM for a small development team. We have a mix of large transformation projects and small improvement projects. We're not good at estimating in man hours (and in fact I'm yet to meet a team of ...
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1answer
88 views

How does the public sector estimate the cost of large-scale infrastructure projects?

Using the example of the proposed Donald Trump Mexico-USA Border Wall; various figures for the estimated cost have ranged considerably. Mr Trump claims the total cost of the wall will be $10bn (£...
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3answers
104 views

How to estimate a project without understanding the network path?

I am trying to estimate for a project, with each resource work for some hours and i have total hours for project. How can derive the exact completion date ? Eg. Resource 1 - 25 tasks - 240 hrs ...
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3answers
318 views

What to do with the Sprint backlog tasks that we have decided are not needed any more

Can anybody answer my question here? I have estimated for 5 to 6 tasks like analysis (4 hrs), design (3 hrs), logical review (1 hr), peer review (1 hr), unit testing (1 hr), coding (2 hrs) and release ...
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4answers
99 views

Is it possible to control a project without start date and durations?

In a discussion about the project plan with my team we collected activities, brought them into order and defined end dates. When we came to defining start dates and durations one of the elder team ...
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2answers
108 views

Estimating and Project budgets

I'd be interested to hear how you manage dealing with project budgets when having to provide a fixed cost up front for the customer ahead of starting the work? For context, and without giving too ...
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2answers
170 views

How many developers do we need? How much time?

We are currently using Scrum and we are evolving into Kanban. At the same time, we are starting a migration from version 1 of our underlying framework to version 2. There is a target date of January 1 ...
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1answer
1k views

When are Story Points and priority estimated in the planning phase of agile?

In our agile requirements gathering sessions (not sure of the technical name sorry), where we engage with the product owner to list all stories that are required for the implementation, we typically ...
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2answers
931 views

How can I determine a project end date when PBIs are not estimated?

How can I determine a project end date when Product Backlog Items (PBIs) are not estimated? Consider the following two examples: I am on a project that is at the beginning. I'm asked when the project ...
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3answers
2k views

Current best metrics related to requirements, design and architecture

So my boss put forth a 'research and find out question' to me: Are there ANY (absolutely any, no matter the dumbest, but any) metrics for requirements management? Eg. Requirements completeness, ...
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2answers
59 views

Should we estimate business users' availability for an agile project?

I recently submitted my project estimations for peer review and I have been advised that we need to estimate the business users' availabilities that will be required to complete each Sprint. I was ...
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1answer
69 views

Lean Kanban without estimates or time logging

I work in academia (research). Tasks are varied and almost always involve delving into topics that produce more tasks when you are more informed. A pull system seems appropriate rather than an ...
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2answers
61 views

How to set quarterly goals for an unknown amount of work?

My team is working on improving performance for our web application. We have a general idea that we want to: Lower the number of "bad" API calls by focusing on driving down the number of requests ...
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3answers
120 views

How do you write completable “stories” when all members of a team have a specialty?

From a user perspective our stories seem clear. From a engineering perspective our stories are a bit too broad and need to be broken up into sub-tasks. This is OK, but each member of the team has a ...
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1answer
257 views

How to determine hours spent on a project if didn't record them at the time?

How can I produce an accurate determination of hours spent on projects in the past when I didn't record the time spent at the time? I used to own my own business putting on concerts in the Seattle ...
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1answer
88 views

How to estimate effort when the story involves a large number of repeat processes?

In our organization we occasionally have stories that involve a very large number of repeated process. The process itself is very simple and straightforward and usually we give 2~3 points. When the ...
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1answer
454 views

How to calculate Critical Path including Std Dev for each activity estimate?

When estimating activity durations, you get a duration plus/minus a sigma (standard deviation) for each activity. Afterwards, when you want to determine the critical path, what figure should you ...
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2answers
230 views

How to estimate cost to remove bug?

Couple of month before I committed one project to remove bug from that software, that project is not developed according to customer requirements. So, I have included some advanced function according ...
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1answer
3k views

Multiple resources for one task in MS Project

I have a single task (of type Fixed Work) with a total Work estimated to 160 hours. When I assign two full-time resources (let's call them Alice and Bob) to it, Duration of the task is 80 hours, as ...
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3answers
336 views

Software to help estimate effort and record effort for timeline purposes (one man team)

I am trying to find some software that allows the following workflow: Create a wbs with effort. Plot wbs items onto a Gantt chart to see when items should/could be completed by and build a schedule. ...
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2answers
772 views

Which model of benefits measure is appropriate for a new projects

I would like to know a good method to measure which idea choose to get the maximal benefits. The live is more easier when we have a customer which suggests some price and we can balance the cost to ...
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2answers
105 views

How to estimate a Research and Development project?

Our software team has been doing a lot of R&D work to improve the performance of our product. Of course, the management team would like to know how long it's going to take to improve the ...
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1answer
140 views

If SAFe must be continuously calibrated and measured in ideal days, why does the framework say recalibration is unnecessary?

TL;DR SAFe says you don't need to recalibrate estimation, but requires estimates and other metrics to be normalized across one or more Agile Release Trains. Context, question rationale, and the ...
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1answer
68 views

Advanced estimation accuracy techniques

What techniques are available to calculate the accuracy of ranged estimates, on units of work that may be irregularly re-estimated? The evaluation should account for estimates made on behalf of ...