Basic time estimation<br />Joan Starr, @joan_starr<br />California Digital Library<br />
Estimating time<br />Pick two places in your town or city,<br />places you know well.<br />Call one place, Place A and<br ...
Estimating time<br />How long does it take to walk from<br />Place A to Place B?<br />
Estimating time<br />How long does it take to walk from<br />Place A to Place B?<br />How do you know? <br />
Estimating time<br />Does it vary by the walker’s stride?<br />
Estimating time<br />Does it vary by the walker’s stride?<br />Do the walker’s shoes affect the time?<br />
Estimating time<br />Does it vary by the walker’s stride?<br />Do the walker’s shoes affect the time?<br />Does it depend ...
Estimating time<br />How long would it take to walk <br />20 times the distance <br />between Place A and Place B? <br />W...
Estimating time<br />Step 1: Split the overall effort into tasks<br />the size of which you know:<br />Based on your exper...
Estimating time<br />Step 2: Adjust the task time estimate upward<br />if any of these conditions are met:<br />The task i...
Estimating time<br />Step 3: Adjust the elapsed time to allow for:<br />Required training.<br />Vacations, holidays or oth...
Estimating time<br />Step 4: Capture actual time for comparison<br />and estimating skill improvement.<br />
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Basic Time Estimation

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This slideshow explains a simple method for estimating tasks.

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Basic Time Estimation

  1. 1. Basic time estimation<br />Joan Starr, @joan_starr<br />California Digital Library<br />
  2. 2. Estimating time<br />Pick two places in your town or city,<br />places you know well.<br />Call one place, Place A and<br />the other, Place B.<br />
  3. 3. Estimating time<br />How long does it take to walk from<br />Place A to Place B?<br />
  4. 4. Estimating time<br />How long does it take to walk from<br />Place A to Place B?<br />How do you know? <br />
  5. 5. Estimating time<br />Does it vary by the walker’s stride?<br />
  6. 6. Estimating time<br />Does it vary by the walker’s stride?<br />Do the walker’s shoes affect the time?<br />
  7. 7. Estimating time<br />Does it vary by the walker’s stride?<br />Do the walker’s shoes affect the time?<br />Does it depend on how whether<br />you walk alone or <br />with a faster walker?<br />
  8. 8. Estimating time<br />How long would it take to walk <br />20 times the distance <br />between Place A and Place B? <br />What if you stop for lunch?<br />
  9. 9. Estimating time<br />Step 1: Split the overall effort into tasks<br />the size of which you know:<br />Based on your experience,<br />Based on a team member’s experience, <br />Based on industry norms, or<br />Based upon an analogous experience or norm.<br />
  10. 10. Estimating time<br />Step 2: Adjust the task time estimate upward<br />if any of these conditions are met:<br />The task is unfamiliar to the assigned staff member.<br />The requirements for the task are insufficiently detailed. <br />The technology being used to complete the task is new, and or new to your team.<br />
  11. 11. Estimating time<br />Step 3: Adjust the elapsed time to allow for:<br />Required training.<br />Vacations, holidays or other planned leave. <br />Anticipated lack of availability on the part of key players (such as usability testers and advisory groups).<br />Steps in the project that require deliverables from outside the team.<br />
  12. 12. Estimating time<br />Step 4: Capture actual time for comparison<br />and estimating skill improvement.<br />

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