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Measuring Time and Effort

594642c6d8a7fa66c622e740496a0a32?s=47 Erik Reagan
September 16, 2014

Measuring Time and Effort

Whether you’re building software, managing projects, or just driving from one place to another—you’re measuring time and effort in some way. Measuring time and effort happens in all shapes and sizes. When driving somewhere you’re most likely going on experience and deciding to leave when you assume you have enough time given a set of variables such as route, traffic, and weather. When building software the measuring is a bit more specific and likely written down somewhere in some form. But who decides how much to measure? How specific and precise to get?

We’re going to dig into the varying ways to measure time and effort in a variety of contexts. Looking at our collective experiences and the experiences and teachings of those in a few different industries we will have plenty to discuss and debate on this topic. You will hopefully leave with a new perspective or idea on when, how and how much to measure.


Slides prepared and formatted for Refresh Savannah on Sept 16, 2014.




Erik Reagan

September 16, 2014


  1. Refresh Savannah @ErikReagan Measuring Time & Effort How and How

  2. @ErikReagan Refresh Savannah

  3. @ErikReagan Refresh Savannah

  4. @ErikReagan Refresh Savannah

  5. @ErikReagan Refresh Savannah How Long Is the Coast of Britain?

    Statistical Self-Similarity and Fractional Dimension
  6. @ErikReagan Refresh Savannah “Geographical curves are so involved in their

    detail that their lengths are often infinite or, rather, undefinable. However, many are statistically "self- similar," meaning that each portion can be considered a reduced-scale image of the whole. In that case, the degree of complication can be described by a quantity D that has many properties of a "dimension," though it is fractional; that is, it exceeds the value unity associated with the ordinary, rectifiable, curves.”
  7. @ErikReagan Refresh Savannah

  8. @ErikReagan Refresh Savannah

  9. @ErikReagan Refresh Savannah How Long Is the Coast of Britain?

    Statistical Self-Similarity and Fractional Dimension
  10. The Coastline Paradox

  11. @ErikReagan Refresh Savannah How do we measure?

  12. @ErikReagan Refresh Savannah How do we measure?

  13. @ErikReagan Refresh Savannah How do we estimate?

  14. @ErikReagan Refresh Savannah 1. Bottom-Up 2. Top-Down 3. Comparative 4.

    Parametric 5. Three-point
  15. @ErikReagan Refresh Savannah Estimating ➞ Measuring

  16. @ErikReagan Refresh Savannah Fudge Ratio

  17. @ErikReagan Refresh Savannah 1. Start guestimating things 2. Write down

    your guestimate 3. Do 4. Write down the actual time spent 5. Calculate your "fudge ratio"
  18. @ErikReagan Refresh Savannah Estimate and perform a task

  19. @ErikReagan Refresh Savannah 20 15hrs estimated hrs actual 1.33 fudge

  20. @ErikReagan Refresh Savannah Estimate a task

  21. @ErikReagan Refresh Savannah 20 hrs estimated new hrs estimated 26.6

    1.33 fudge ratio
  22. @ErikReagan Refresh Savannah How much do we estimate?

  23. @ErikReagan Refresh Savannah

  24. @ErikReagan Refresh Savannah The One-Sitting Rule

  25. @ErikReagan Refresh Savannah Compensate for Experience

  26. @ErikReagan Refresh Savannah The 40-70 Rule

  27. @ErikReagan Refresh Savannah an accurate Fudge Ratio an appropriate unit

    of measurement the optimal estimate
  28. Refresh Savannah @ErikReagan Thanks! @ErikReagan @FocusLabLLC