STANDARD DEVIATION

What is Standard Deviation

Standard deviation is the measure of dispersion of a set of data from its mean. It measures the absolute variability of a distribution; the higher the dispersion or variability, the greater is the standard deviation and greater will be the magnitude of the deviation of the value from their mean.

• Select Population if data contains all the measurable values or all of the values you are interested in.


• Select Sample if the data is sample of large or unlimited population an you wish to make a statement about entire population.