use the book from the link below to answer the questions on the worksheet for the chapter states.

Use these instructions to answer some of the questions.

For the Standard Deviation I wanted you to use the SAMPLE COMPUTATION FORMULA…………and please show all work, it’s Table 4.4 in the Textbook it’s set up like this

X X2

1 1

2 4

3 9

4 16

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Then SS = X2 – (X x X)/n

or

SS = 30 – (10 x 10)/4 = 30 – (100/4) = 30 – 25 = 5

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Variance = 5/(n-1) = 5/(4-1) = 5/3 = 1.67

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Standard Deviation = square root of 1.67 = 1.29

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Then the Group Frequency Table is (I’ll put in the class intervals I want to use, then you can fill out the rest with the numbers on the text

Class Tally Frequency Relative Frequency Cumulative Frequency Cumulative Percent

50 – 54

45 – 49

40 – 44

35 – 39

30 – 34

25 – 29

20 – 24

15 – 19

10 -14

5 – 9

0 – 4

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then don’t forget your Graphs……..A Bar Graph and an A Stem and Leaf Graph