1. For each of the data sets below, which appears to have the highest variability? Explain your answer.
a. 3, 3, 4, 4, 4, 2, 3
b. 1, 1, 1, 1, 1, 2, 2, 7
c. 4, 2, 3, 2, 3, 5, 7, 7, 7, 4, 7, 2, 7, 7, 3
2. For each data set above, calculate the range and standard deviation.
3. Which measure of variability is most commonly reported?
a. Range
b. Interquartile range
c. Standard deviation
d. Variance