Question

What is the definition of Standard Deviation?

a.
Square of the variance

b.
Square root of the variance

c.
Square of mean minus 1

d.
Square root of the variance minus coefficient of variation

Answer 1

b. Square root of the variance

Explanation:

The standard deviation measure how scattered the data of the set is, in other words, measure the dispersion. A low value is found when the points are close to the mean, and when the value is high the data uses a wider range of values. To calculate its value, the simple way, you need the variance because the standard deviation is the square root of the variance.