Statistics

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1.       Compute the exclusive and inclusive ranges for the following items

High score                          

7             

89

34

15

1                             

Low score

6

45

17

2

1             

 

 

2.       Why would you expect more variability on a measure of personality in college freshman grades than you would on a measure of height?

3.       Why does the standard deviation get smaller as the individuals in a group score more similarly on a test?

4.       Compute range, unbiased and biased, standard deviation and variance on the following numbers: 31, 42, 35, 55, 54, 34, 25, 44, 35

5.       Compute unbiased estimate of standard deviation on the following numbers: 4,5,6,2,5,7,5,6,8,5

6.       Find the range, standard deviation and variance for  the following:

a.       3,5,7,9  b. 2,4,6,8  c. 3.5. 6.2, 9.3, 4.1, 5.5, 7.9

    • 10 years ago
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