# Question

The standard deviation, the range, and the interquartile range (IQR) summarize the variability of the data.

a. Why is the standard deviation s usually preferred over the range?

b. Why is the IQR sometimes preferred to s?

c. What is an advantage of s over the IQR?

a. Why is the standard deviation s usually preferred over the range?

b. Why is the IQR sometimes preferred to s?

c. What is an advantage of s over the IQR?

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