The following stem and leaf diagram gives the distances in thousands of
The following stem-and-leaf diagram gives the distances (in thousands of miles) driven during the past year by a sample of drivers in a city.
a. Compute the sample mean, median, and mode for the data on distances driven.
b. Compute the range, variance, and standard deviation for these data.
c. Compute the first and third quartiles.
d. Compute the interquartile range. Describe what properties the interquartile range has. When would the IQR be preferable to using the standard deviation when measuring variation?
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