Determine the first, second, and third quartiles for the data in given Exercise; then calculate the interquartile range and the quartile deviation.
Exercise
According to the U.S. Environmental Protection Agency, a sample of 10 subcompact models shows the following estimated values for highway fuel economy (mpg): 40, 33, 32, 30, 27, 29, 27, 23, 21, and 10. For these sample data, determine:
a. The mean, median, range, and midrange.
b. The mean absolute deviation.
c. The standard deviation and variance.