calculate standard Deviation by the short-cut Method.

Calculated standard deviation by shortcut method .

Given the following series, calculate standard deviation by direct method:

Find the mean, variance and standard deviation using short-cut method.

Find the mean, variance and standard deviation using short-cut method.

Find the mean deviation by short cut method.

Find the mean, variance and standard deviation using short-cut method Calculate the standard deviation and mean diameter of the circles.