8.3 Describing and Analyzing Data

Identify whether the following data set is unimodal, bimodal, multimodal, or has no mode. Assume the data set is a sample and find the modes, if any exist. 17,10,22,28,20,18,22,17,11,28,15

Multimodal; 17, 22, 28

Identify whether the following data set is unimodal, bimodal, multimodal, or has no mode. Assume the data set is a sample and find the modes, if any exist. 38,31,43,49,41,39,43,38,32,49,36

Multimodal; 38, 43, 49

Identify whether the following data set is unimodal, bimodal, multimodal, or has no mode. Assume the data set is a sample and find the modes, if any exist. 31, 33, 26, 44, 27, 33, 40, 33, 38, 36, 34

Unimodal: 33

Find the median of the following data set. Assume the data set is a sample. 14, 27, 10, 16, 20, 17, 17, 23, 22, 22, 21

20

A researcher randomly purchases several different kits of a popular building toy. The following table shows the number of pieces in each kit in the sample. Find the mean of the data. Round your answer to the nearest hundredth, if necessary. 180, 65, 285, 370, 370, 65, 124, 316, 285, 129, 190, 228

217.25

Find the median of the following data set. Assume the data set is a sample. 11, 24, 7, 13, 18, 14, 26, 20, 19, 6, 13, 15

14.5

Find the standard deviation of the following data set. Assume the data set is a sample. Round your answer to the nearest hundredth, if necessary. 44,88,40,46,83,47,47,53,52,52,86

18.2

A researcher randomly purchases several different kits of a popular building toy. The following table shows the number of pieces in each kit in the sample. Find the median of the data. 172, 57, 277, 362, 362, 57, 116, 308, 277, 121, 182, 220

201

Find the range of the following data set. Assume the data set is a sample. 19, 36, 27, 38, 15, 27, 28, 21, 33, 22, 22

23

Find the range of the following data set. Assume the data set is a sample. 19,36,27,38,15,27,28,21,33,22,22

23

Find the standard deviation of the following data set. Assume the data set is a sample. Round your answer to the nearest hundredth, if necessary. 19, 32, 15, 21, 25, 22, 22, 28, 27, 27, 26

4.8

Find the mean of the following data set. Assume the data set is a sample. Round your answer to the nearest hundredth, if necessary. 49, 50, 50, 51, 45, 45, 48, 44, 38, 55, 42

47

A researcher randomly purchases several different kits of a popular building toy. The following table shows the number of pieces in each kit in the sample. Find the range of the data. 178, 63, 283, 368, 368, 63, 122, 314, 283, 127, 188, 534

471

Leon knows that his first four test grades were 93, 85, 83, and 82. Find Leon's grade on the fifth test if his test average is .

96

Identify whether the following data set is unimodal, bimodal, multimodal, or has no mode. Assume the data set is a sample and find the modes, if any exist. 16, 23, 24, 29, 12, 24, 25, 18, 22, 19, 19

Bimodal: 19, 24

Identify whether the following data set is unimodal, bimodal, multimodal, or has no mode. Assume the data set is a sample and find the modes, if any exist. 19,26,27,32,15,27,28,21,25,22,22

Bimodal; 22, 27

Dwayne had a test average of 82.8 last semester. His first four test grades were 88, 77, 78 , and 86. Find his score on the fifth test.

85

Find the standard deviation of the following data set. Assume the data set is a sample. Round your answer to the nearest hundredth, if necessary. 28,23,23,24,18,18,25,17,11,30,15

5.77

Find the standard deviation of the following data set. Assume the data set is a sample. Round your answer to the nearest hundredth, if necessary. 46, 32, 32, 33, 27, 27, 43, 26, 20, 48, 24

9.3

Identify whether the following data set is unimodal, bimodal, multimodal, or has no mode. Assume the data set is a sample and find the modes, if any exist. 26, 26, 26, 26, 26, 26, 26

No mode