Use the frequency distribution table below showing a sample data set for 10 students on a test with

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Use the frequency distribution table below showing a sample data set for 10 students on a test with a maximum score of 20 to find the standard deviation of the scores. (Round answer to one decimal position.)

 

Score

Frequency

Midpoint

Midpoint x Frequency

Midpoint squared x Frequency

1 – 5

4

 

 

 

6-10

3

 

 

 

11 – 15

2

 

 

 

16 – 20

1

 

 

 

Totals

10

 

 

 

 

 

 

 

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