Using Measures of Center to Draw Inferences

mean

mean and median

mean, median, and mode

median

80

83

85

88

91

88

85

84

80.3

83

88

80.8

DVD players cost less, on average, at Store B

The range for Store B is greater than the range for store A

Data for store B has a greater mean, but not greater median than Store A.

DVD players cost less, on average, at Store A.

Mean: 28

Median: 26

Mode: 20

Mean: 27

Median: 26

Mode: 20

Mean: 25

Median: 28

Mode: None

Mean: 28

Median: 28

Mode: 20

The 1st period mean is 35. The 2nd period mean is 38.75. On average, it took students in the 1st period class slightly longer to finish their homework than it did the students in the 2nd period class.

The 1st period mean is 38.75. The 2nd period mean is 35. On average, it took students in the 1st period class slightly longer to finish their homework than it did the students in the 2nd period class.

The 1st period mean is 35. The 2nd period mean is 38.75. On average, it took students in the 2nd period class slightly longer to finish their homework than it did the students in the 1st period class.

The 1st period mean is 38.75. The 2nd period mean is 35. On average, it took students in the 2nd period class slightly longer to finish their homework than it did the students in the 1st period class.