Lesson 9.1- Measures of Center and Spread

Find the mean of these math test scores.

68, 52, 83, 91, 80

• 62.3

• 76.2

• 74.8

• 78.6

Tags

CCSS.7.NS.A.3

What is the median age of visitors to the museum last Saturday?

48, 16, 58, 12, 42, 50, 10, 62, 68, 62

• 45

• 46

• 62

• 49

Tags

CCSS.6.SP.A.3

CCSS.6.SP.B.5

What is the median of these attendance numbers for the past week?

52, 58, 63, 48, 75

• 63

• 48

• 58

• 54.5

Tags

CCSS.6.SP.A.2

CCSS.6.SP.A.3

CCSS.6.SP.B.5

Find the IQR.

10, 14, 20, 15, 12, 13, 24

• 8

• 12

• 14

• 20

Tags

CCSS.6.SP.A.2

CCSS.6.SP.A.3

CCSS.6.SP.B.5

JoJo scored 12, 18, 15, 21, 26, 16, 32, and 28 points in his first eight games. What is his average points scored per game?

• 20

• 21

• 19

• 24

Tags

CCSS.6.SP.A.3

CCSS.6.SP.B.5

What is the interquartile range of this data?

162, 184, 205, 248, 192, 236, 268, 282,

• 120

• 95

• 70

• 72

Tags

CCSS.6.SP.A.2

CCSS.6.SP.A.3

CCSS.6.SP.B.5

What is the median of this data set?

18.2, 36.2, 24.6, 42.8, 12.6, 53.8

• 33.7

• 24.6

• 40.2

• 30.4

Tags

CCSS.7.EE.B.3

Find the mean.

10.2, 15, 16.4, 15, 20, 18.1, 16, 24, 18, 22.3

• 17.5

• 18

• 18.5

• 19

Tags

CCSS.6.NS.B.3

CCSS.6.SP.A.3

CCSS.6.SP.B.5

What is the range of the middle half of this data?

162, 192, 184, 248, 205, 236, 282, 268,

• 68

• 70

• 79

• 88

Tags

CCSS.7.EE.B.3

Which measurement of these test scores is the highest?

78, 79, 72, 99, 77, 71, 79

• Mean

• Median

• Mode

• IQR

Tags

CCSS.6.SP.A.3

CCSS.6.SP.B.5