Estimation is the process of finding an estimate, or approximation, which is a value that is usable for some purpose even if input data may be incomplete, uncertain, or unstable.

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2answers
128 views

How to know if I'm slow or fast at programming?

I understand that it's extremely depends on a particular case, but I really would like to know at least roughly how long a specific task can take for completion to average programmer. Is there any ...
3
votes
3answers
522 views

Can I trust the Basic Schedule Equation?

I've been reading Steve McConnell's Software Estimation: Demystifying the Black Art book, and he gives an equation for estimating nominal schedule based on Person-months of effort: ScheduleInMonths = ...
-3
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1answer
89 views

Complicated constant in “The Software Equation”?

Why are the constants in The Software Equation so complicated? Here is the equation. where E = Project effort measured in person-months or person-years LOC =Lines of Code estimate for the ...
6
votes
2answers
899 views

Is it okay to add time for “unexpected delays” to a time estimate?

I've landed my first contract (hooray, self employment!) and the company is asking for time estimates. Programmers are notoriously bad at time estimates, and I know I've been laughably wrong ...
2
votes
4answers
122 views

In Scrum, are story points assigned at different planning poker sessions worth the same?

As far as I understand, a planning poker session usually is started by picking one item and assigning it a value (say, 1). This item will then serve as a reference for the rest of the session. From ...
2
votes
2answers
397 views

What is a good way to make estimates clear to the customer?

So me and my team have been doing estimates for a new project but we have been getting the feeling lately that the customer has trouble understanding not the estimates in itself but what the stories ...
334
votes
14answers
97k views

How to respond when you are asked for an estimate?

We, as programmers, are constantly being asked 'How long will it take'? And you know, the situation is almost always like this: The requirements are unclear. Nobody has done an in depth analysis of ...
2
votes
2answers
6k views

Closest Point of Approach (CPA) mathematical formula in ship radar

I was recently searching for the mathematical formula to find closest point of approach (CPA) between one ship and another ship. I need to apply the formula in my radar ship program and I can't find ...
19
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2answers
474 views

Has research been done on the effectiveness of Planning Poker as an estimation technique?

Although it is a commonly held opinion that planning poker improves the accuracy of project estimations (a small sample of which demonstrated on this question), has any defined research been done on ...
2
votes
3answers
113 views

Requirements and Documentation in Agile

My company has recently started to take on smaller software development projects. Typically small web applications to be used on a client's intranet. They are usually 3-5 months work in total. ...
12
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3answers
13k views

Which string search algorithm is actually the fastest?

I have been stuck for some time on which is the fastest string search algorithm, heard many opinions, but in the end I'm not sure. I have heard some people saying that the fastest algorithm is ...
2
votes
2answers
64 views

How to include estimating and its effect on prioritization with Kanban?

I've read in several sources about Kanban. Using Atlassian's description as my current main source of information about how it works, I wonder how the effects of estimations on prioritization should ...
4
votes
2answers
102 views

Estimating in groups - How to extract useful statistics / estimates?

As many other projects we have to estimate our jira tasks up front. This is obviously not fun and I've started hacking on a simple webapp to "gameify" this tedious process. My idea is that an issue ...
27
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13answers
1k views

Sales Manager: “Why is time-estimation so complex?” [duplicate]

A few days ago a sales manager asked me that question. But at this moment I didn't know a answer which he can understand. He isn't a programmer! At the moment I work on a product which is over 8 ...
0
votes
3answers
120 views

When estimating with a fresh team on a new project, is there a reason not to use default velocity for estimating?

Generally when estimating using an Agile points system on an experienced project team, the points have meaning relative based on past experience - that take into account: understanding of the ...
4
votes
2answers
112 views

What document/artifact should alert me when an old requirement changes the scope of new one?

I developed a software application a year ago, I delivered it with a simple documentation. For example, it has an special and complicated login system as requirement. Now the customer calls and ask ...
3
votes
1answer
146 views

COCOMO II SLOC count for web application development

What type of SLOC do you take into account for estimating web application development projects with COCOMO II? For instance, suppose you have to estimate a web application project that will probably ...
4
votes
1answer
95 views

Misunderstanding about “Evidence Based Scheduling” in estimation tasks

I read the Spolsky blog the post with title "Evidence based scheduling" (http://www.joelonsoftware.com/items/2007/10/26.html) but I don't understand the mechanism to predict and estimate ...
0
votes
1answer
84 views

Do I need to estimate maintenance software issues? [closed]

The PM of the company I work on, always asks me to estimate maintenance issues and since there are several legacy systems that I didn't build, makes this hard to get. He says getting estimations for ...
30
votes
9answers
3k views

What should I do when waiting for a review?

Before asking my question, I must explain the situation. I'm working for a company as a junior software engineer. One of the seniors always stops me when I have finished my development and want to ...
3
votes
1answer
41 views

How can I get the transit time for packets for a jitter buffer?

I'm trying to wrap my head around the concept of a real jitter buffer. I'm basing the only knowledge that I have around this article: http://toncar.cz/Tutorials/VoIP/VoIP_Basics_Jitter.html This ...
3
votes
2answers
151 views

How to deal with outlier programmers during sprint planning?

It is generally accepted that the best programmers produce at least an order of magnitude more than average ones. This seems like it would cause problems with the usual approaches to sprint planning ...
24
votes
10answers
2k views

How to add a new developer to the team

I run a small company composed of only 2 developers. We are building a very big application for one of our clients. Development on this project has gone on for 1.5 years. Now this client has secured ...
4
votes
4answers
233 views

Estimating scrum points for non cross-functional team

We are working to transition our development team to be more Agile. I have a question about story point estimation and their relationship to an individual's skill. The scenario is that our team ...
13
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6answers
1k views

Time estimating of a complex bug investigation (not a straight-forward one) [duplicate]

(It is not a duplicate: Bug investigation is much more non-deterministic than a defined development task where things to be done are specified. Investigation is about narrowing a huge search space, ...
5
votes
6answers
544 views

How does agile estimate the time required for a “research phase”?

According to canonical agile development, what is the appropriate amount of learning that an engineer should engage in before implementing a solution to a problem? If an engineer knows she is too ...
2
votes
2answers
2k views

Good examples for teaching software estimation (size, schedule, effort)? [closed]

I'm going to be teaching a class that covers a broad brush of estimation techniques. I intend to cover absolute estimation techniques based on SLOC (e.g. Function Points, COCOMO II etc.) and ...
52
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5answers
2k views

How can you estimate time for tasks which primarily consist of figuring out a problem?

While it is relatively possible for an experienced developer to estimate how long it will take to implement code when the pattern and problem the code is solving is well understood, how can you make a ...
3
votes
2answers
350 views

Should we estimate tasks during backlog grooming?

I was just taken by surprise in a backlog grooming meeting when we assigned time estimates to BA, dev, and QA tasks...but the story is not yet scheduled in any sprint and we are not yet assigning ...
0
votes
2answers
245 views

How to budget for a programmer you're not ready to hire yet? [closed]

I am trying to work up a budget for an app, specifically a budget for hiring a third-party programmer to add a specific feature, and I'm trying to figure out how to get a decent number. The ...
25
votes
7answers
14k views

Scrum - how to carry over a partially complete User Story to the next Sprint without skewing the backlog

We're using Scrum and occasionally find that we can't quite finish a User Story in the sprint in which it was planned. In true Scrum style, we ship the software anyway and consider including the User ...
8
votes
6answers
788 views

Software cost estimation [closed]

I've seen on my work place (a University) most students making the software estimation cost of their final diploma work using COCOMO. My guessing is that this way of estimating costs is somewhat old ...
3
votes
1answer
4k views

Scrum: Capacity vs Velocity when planning a sprint

We have completed 11 sprints so far in our current project. In most sprints we have not been burning down well and usually finish with our velocity gradient flattening as we approach the end of the ...
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votes
2answers
238 views

Estimation of space is required to store 275305224 of 5x5 MagicSquares? [closed]

Here are some examples of 5x5 Magic Squares found by some good solvers : Magic Square Generator by Marcel Roos this program state using 2.4GHz Intel takes about 95 hours to generate all solutions. ...
2
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5answers
573 views

Scrum task over estimation

In my current company we're using Scrum with 2 week iterations and a regular planning session. How planning normally works in our company is that we take a predefined , prioritized (by PO before the ...
31
votes
14answers
973 views

Boss doesn't believe my time estimate… advice/backup? [duplicate]

I'm working at a startup software company -- 3 developers, less than 15 employees including the CEO. We deal exclusively with Windows Mobile, the .NET CF, and passing the information gathered from our ...
0
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0answers
48 views

Alternatives to binding cost quotes of indefinite projects

I work for a custom software house. We have clients with yearly budget allocations. They often have excess funds they need to spend before the next fiscal period, but only a general idea of what they ...
3
votes
4answers
201 views

Point estimates scale skewed

When using planning poker for estimates, we've ended up with effectively a non-linear points scale. By that I mean that point value is inconsistent for one-pointers and, say, eight-pointers. Couple ...
1
vote
3answers
180 views

How to set more accurate “deadlines”? [duplicate]

Context: My work is to build financial reports using mostly Excel spreadsheets. This consists mostly of formulas and a good deal of VBA. Each person is built by a single person. We service many ...
7
votes
6answers
420 views

Project estimation with increasing requirements

Making a project estimation with given a requirements set is one thing. But, what happens when the user suddenly starts changing them on the fly and starts adding new requirements to the already ...
7
votes
6answers
1k views

Assuming “clean code/architecture” is there a difference in “effort” between PHP or Java/J2EE web application development? [closed]

A client asked us to estimate effort when selecting PHP as the implementation language for his next web-based application. We spent about a week exploring PHP, prototyping, testing etc., We are quite ...
28
votes
9answers
3k views

Why are deadlines always so short? [duplicate]

I'm a junior developer in a small company (in a team of 2 developers). Everytime we are asked to implement a new feature: the deadline is set so that we just have time to do the development: there ...
1
vote
2answers
122 views

How do you deal with being behind on a task? [closed]

I have a question for you guys. Say, you're given a task as an item in a product backlog. Say, you have a deliverable that's due the following day. If you're behind on the task compared to when you ...
1
vote
1answer
65 views

Are there any public statistics on the implementation time of software tasks? [closed]

I'd like to get better at estimating how long it will take me to complete tasks. When estimating things I know little about, I think it's best to start with base rate information and adjust it based ...
0
votes
2answers
159 views

Using commit messages for time tracking

Some products can parse a special syntax in commit messages to extract additional data, such at time tracking information: https://confluence.atlassian.com/display/FISHEYE/Using+smart+commits To me, ...
6
votes
7answers
753 views

Estimated work remaining doesn't get lower [duplicate]

I'm working as a developer / architect on a software project. The project manager decided not to follow the Agile principles, but to rather have an Excel sheet with all the feature requests and their ...
1
vote
3answers
259 views

Quoting for a project with closed source [closed]

I sit with a project that I need to quote, and until the job is awarded, I can only use "View source" to check, and ask a few questions about the system. That makes quoting outright impossible for me ...
0
votes
1answer
133 views

Time complexity implications when designing shell scripts for large data/high number of files?

There are many questions about the performance of commands or scripts on the U+L SE asset. As time is of the essence, this is often evaluated using the bash time reserved word or the external time ...
1
vote
1answer
180 views

How long do you spend on analysis? Is this analysis paralysis? [duplicate]

I am not very good at estimating how long a piece of work will take to complete. I am guilty of putting my finger in the air and guessing. Usually things are later than expected, however sometimes ...
8
votes
3answers
7k views

How to estimate sprint velocity with varying team capacity?

We are a small team of 4 devs rather green in Scrum. Coming from all over the country, we often take odd days off or whole weeks off to go home. Therefore our team capacity changes dramatically from ...