# The file S02_06.xlsx lists the average time (in minutes) it takes citizens of 379 metropolitan areas to

## Question:

a. Create a histogram of the daily commute times.

b. Find the most representative average daily commute time across this distribution.

c. Find a useful measure of the variability of these average commute times around the mean.

d. The empirical rule for standard deviations indicates that approximately 95% of these average travel times will fall between which two values? For this particular data set, is this empirical rule at least approximately correct?

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## Data Analysis and Decision Making

**ISBN:** 978-0538476126

4th edition

**Authors:** Christian Albright, Wayne Winston, Christopher Zappe