Mean Deviation About Mode Formula. Firstly we have to calculate the mean mode and median of the series. Large m d about mode frac sum f left x mode right sum f for a population data the mean deviation about the population mean mu is.
M frac left size of frac n 1 2 th item size of frac n 2 1 th item right 2 m 2 s izeof 2 n 1. So the mean 9 and the mean deviation 3 75. In that example the values are on average 3 75 away from the middle.
Firstly we have to calculate the mean mode and median of the series.
M s i z e o f n 1 2 t h i t e m s i z e o f n 2 1 t h i t e m 2. M d frac sum f left x mu right sum f. It tells us how far on average all values are from the middle. Statistics is a discipline of mathematics that uses quantified models and representations to gather review analyze and draw conclusions from data the most commonly used statistical measures are mean median and mode variance and standard deviation are measures of dispersion in statistics and various measures of concentration including quartiles quintiles deciles and percentiles.
