Question

Ms. Strickland is practicing the piano for an upcoming recital. The table list the number of minutes she practiced in the past few weeks.

a. What is the median number of minutes she practiced?

b.What is the range of the data?

c.What is the mean number of minutes that she practiced?

Answer 1

a. 20

b. 32

c. 20.6

Explanation:

Median is the middle number- so put the numbers in order from least to greatest, and find the middle number

8, 10, 10, 15, 15, 20, 20, 20, 25, 25, 25, 35, 40

Median is 20

the range is the difference between the largest and the smallest value- 40-8 is 32

Mean is the average- add all the values and divide by the total number of values (13)

268 minutes divided by 13 days

mean is about 20.6 minutes