Mean Deviation About Median Formula. M d frac sum x m n sum summation. Large m d frac sum f left x mu right sum f.
M d frac sum f x m sum f sum summation. Example 7 calculate the mean deviation about median for the following data. The formula for the co efficient of mean deviation.
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.
Arithmetic median is a positional average and refers to the middle value in a distribution. This includes the median which is the n 2 th order statistic or for an even number of samples the arithmetic mean of the two middle order statistics. Arithmetic mean r 1 r 2. M d frac sum x m n sum summation.
