Suppose that the following data provide the hours of playing video games per week for a sample

of 15 high school students in Roanoke, Virginia: 5, 11, 25, 19, 18, 20, 27, 13, 8, 10, 15, 19, 18, 9,

and 12.

a.

Determine the location and value of the first quartile

, second quartile and third quartile.

b.

Calculate and interpret the interquartile range

.

c.

Construct a box plot for the ages and identify any extreme values.

d.

What does the box plot tell you about th

e distribution of the data?