Class Arm Span Histogram

  1. Each person will measure their arm span from fingertip to fingertip with arms outstretched.
  2. This is easiest done working with a partner and measuring across their back.
  3. Divide the interval from the shortest span to the longest span into about 5-8 bins.
  4. Create a histogram with the 5-8 bins on the x-axis and the number of people with arm spans fitting in that bin on the y-axis.
  5. This will demonstrate the natural variation of a trait within a population.