Trimmed Mean Practice

Charlie recorded the number of pushups he completed each day for 10 days as follows: 5, 4, 7, 6, 8, 10, 11, 0, 7, 18

Calculate the 10% trimmed mean.

• 7.3

• 7.6

• 9

• 7

Charlie recorded the number of pushups he completed each day for 10 days as follows: 5, 4, 7, 6, 8, 10, 11, 0, 7, 18

Calculate the 20% trimmed mean.

• 7.3

• 7.6

• 7.2

• 7

A technician recorded the following 20 observation scores:

8, 12, 12, 16, 32, 39, 39, 45, 47, 50, 51, 59, 61, 74, 75, 87, 87, 87, 92, 93. How many values should be removed from each end to calculate a 20% trimmed mean?

• 2

• 4

• 3

• 1

A technician recorded the following 20 observation scores:

8, 12, 12, 16, 32, 39, 39, 45, 47, 50, 51, 59, 61, 74, 75, 87, 87, 87, 92, 93. Calculate the 20% trimmed mean.

• 55

• 54.9

• 50.5

• 87

Calculate a 5% trimmed mean for the following data set (20 values):

14, 20, 20, 20, 20, 23, 25, 30, 30, 30, 35, 35, 35, 40, 40, 42, 50, 50, 80, 80

• 1

• 34.7

• 32.5

• 36.0

Calculate a 15% trimmed mean for the following data set (20 values):

14, 20, 20, 20, 20, 23, 25, 30, 30, 30, 35, 35, 35, 40, 40, 42, 50, 50, 80, 80

• 3

• 34.7

• 32.5

• 36.0

A student has the following 5 test scores: 99, 83, 81, 60, 91. Calculate the 20% trimmed mean

• 82.8

• 85

• 83

• 81.8

Tags

CCSS.HSS.ID.A.2

CCSS.HSS.ID.A.3

A figure skater earned the following scores on a performance: 6.0, 8.1, 8.3, 9.1, 9.9

Calculate the 20% trimmed mean.

• 8.50

• 8.28

• 8.08

• 8.3

Snowfall amounts (in inches) were recorded for 10 cities on December 25th. The totals were: 1.0, 2.0, 5.2, 6.0, 7.1, 7.5, 7.8, 8.2, 8.4, 15.0 Calculate the 10% trimmed mean.

• 6.53

• 6.82

• 7.30

• 6.30

Tags

CCSS.HSS.ID.A.2