The grades obtained on a test by twelve students in a class are listed below.
$66,70,68,75,80,86,64,73,80,94,72,91$
-Find the standard deviation of the grades.

Name: The grades obtained on a test by twelve students in a class are listed below. $66,70,68,75,80,86,64,73,80,94,72,91$ -Find the standard deviation of the grades.
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The Answer of The grades obtained on a test by twelve students in a class are listed below.
$66,70,68,75,80,86,64,73,80,94,72,91$
-Find the standard deviation of the grades.

The Grades Obtained on a Test by Twelve Students in a Class