What is called the sum of deviations from the arithmetic mean divided by sample size for the set of numerical data?
a.
variance
b.
standard deviation
c.
variation of coefficient
d.
none of the above

  d.  none of the above

Step-by-step explanation:

The sum of deviations from the mean is zero.

__

The sum of absolute deviations, divided by the sample size, is the mean absolute deviation.

The sum of the squared deviations from the mean, divided by the sample size, is the variance.

it is b)

hope this : )

step-by-step explanation: