Measures of Central Tendency

Quartiles

100

Find the Median:

5, 7, 5, 10, 8, 13, 2

7

200

Find the Upper Quartile:

75, 98, 74, 133, 98, 120, 89, 69, 88

109

300

Find the Lower Quartile:

23, 52, 49, 56, 24, 98, 56

24

400

Find the Upper and Lower Quartiles:

83, 47, 53, 87, 56, 83, 97, 

53 and 87

500

Find the Upper and Lower Quartiles, and the Median:

75, 87, 56, 12, 35, 62, 38

35, 56, and 75

Mode

100

Find the Mode: 

5, 5, 6, 10, 8, 5,

5

200

Find the Mode:

1, 2, 3, 5, 3, 8, 7, 6, 4, 7, 6, 6, 2

6

300

Find the Mode:

9, 8, 7, 6, 5, 4, 1, 2, 3, 4, 5, 6, 5, 4

4 and 5

400

Find the Mode:

24, 72, 56, 38, 75, 73, 48, 75, 82, 75

75

500

Find the Mode:

67, 83, 45, 63, 76, 38, 83, 67, 67, 76, 54

67

Mean

100

Find the Mean:

1, 3, 5, 7, 6, 4, 4, 6, 6, 4, 8, 2

4.66

200

Find the Mean:

8, 7, 5, 6, 3, 8, 7, 5, 6, 3

5.8

300

Find the Mean:

98, 123, 44, 54, 35, 60, 34, 65, 43

61.78

400

Find the Mean:

87, 43, 56, 98, 46, 87, 60, 41, 76, 54, 38, 76, 51, 34

60.5

500

Find the Mean:

87, 23, 46, -37, 12, -83, -87, 68, 26, -58, 23, 16, 51, -82

0.36

Range

100

Find the Range:

9, 8, 3, 2, 6, 5, 9, 8, 1

8

200

Find the Range:

23, 19, 39, 43, 26, 43, 23, 15

28

300

Find the Range:

69, 42, 59, 63, 38, 33, 76, 54

43

400

Find the Range:

26, 37, 26, 27, 78, 34, 86, 24

62

500

Find the Range:

89, -72, 55, -49, 70, 54, 64, -73, 66, 109

182

Standard Deviation

100

Find the Standard Deviation:

3, 6, 5, 8, 7, 6, 4, 3

1.71

200

Find the Standard Deviation:

79, 63, 67, 52, 74, 63, 73

9

300

Find the Standard Deviation:

87, 44, 46, 44, 74, 36, 53

17.3

400

Find the Standard Deviation:

98, 72, 87, 69, 62, 117, 109

19.55

500

Find the Standard Deviation:

-52, 96, 92, 84, 69, -49, 86, 104

60.93