# Statistics

## Mean Deviation About Mean and Median – Formula and Examples

Here you will learn what is the mean deviation formula with examples. Let’s begin –  Mean Deviation Formula (i) For Ungrouped distribution : Definition : If $$x_1$$, $$x_2$$, ….. , $$x_n$$ are n values of a variable X, then the mean deviation from an average A (median or arithmetic mean) is given by Mean Deviation …

## Mean Square Deviation Formula and Example

Here you will learn mean square deviation formula and relation between mean square deviation and variance with example. Let’s begin – Mean Square Deviation Formula The mean square deviation of a distribution is the mean of the square of deviations of variate from assumed mean. It is denoted by $$S^2$$. Hence $$S^2$$ = \(\sum{x_i – …

## What are Measures of Dispersion Statistics ?

Here, you will learn what are the measures of dispersion in statistics i.e. range, mean deviation, variance and standard deviation with example. Let’s begin – Measures of Dispersion : The dispersion of a statistical distribution is the measure of deviation of its values about the their average(central) value. It gives an idea of scatteredness of …