A group of hikers recorded the distance they covered during a week. The recorded data (in kilometers) is as follows:

$7,9,11,12,14,15,17,18,20,21$

Determine the four measures of central tendency (mean, median, mode, and midrange) for the original data set and the $10\%$ trimmed data set.

Select the data set where the mean and median are the same, and the set is bimodal.

The following are the weekly paychecks in dollars for $16$ part-time tutors:

$650$, $720$, $880$, $950$, $1100$, $950$, $720$, $1050$, $980$, $880$, $950$, $1150$, $980$, $1050$, $950$, $1200$.

Determine the mean, median, and mode of these paychecks. Which value best represents a typical weekly paycheck?

Listed below are the number of cars owned by a group of individuals. 

Find the mode and range.

Why is the mode the only appropriate measure of center for categorical (qualitative) data?