The following is a sample of 25 measurements:

a. Compute , s2, and s for this sample.
b. Count the number of measurements in the intervals ± s, ± 2s, ± 3s. Express each count as a percentage of the total number of measurements.
c. Compare the percentages found in part b to the percentages given by the Empirical Rule and Chebyshev's Rule.
d. Calculate the range and use it to obtain a rough approximation for s. Does the result compare favorably with the actual value for s found in part a?

Transcribed Image Text:

7 6 6 11 8 9 9 10 8 77 5 9 10 77 77 9 12 10 10 8 6