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students that got an A= 56 41 40 39 36 36 30 25 The variance of...

students that got an A= 56 41 40 39 36 36 30 25

The variance of the number of books read by students who earned an A grade is?

​(Round to four decimal places as​ needed.)

The standard deviation of the number of books read by students who earned an A grade is?

​ (Round to the nearest thousandth as​ needed.)

students that got a B or C= 40 28 23 22 21 16

The variance of the number of books read by students who earned either a B or C grade is?

​(Round to four decimal places as​ needed.)

The standard deviation of the number of books read by students who earned either a B or C grade is?

​(Round to the nearest thousandth as​ needed.)

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