Mean deviation formula: Standard Deviation is a statistical measure

Standard Deviation is a statistical measure that describes how much variation or dispersion there is in a set of data points. It helps us understand how spread out the values in a dataset are compared to the mean (average). Learn how to calculate the mean deviation and its coefficient of mean deviation for a data set. See the formula , the measure of central tendency and the example problems with solutions. For ungrouped data or data that is not properly arranged, that is, the given data is in raw form, the mean deviation is calculated using the formula , Mean Deviation = ∑i = 1n |xi - x̄| / n The mean deviation is also known as the mean absolute deviation and is defined as the mean of the absolute deviations of the observations from the suitable average which may be the arithmetic mean , the median or the mode. The formula to calculate Mean deviation is as stated below: