Mean Deviation About Median For Ungrouped Data. Let s start with recalling how to calculate mean and median for individual distribution series. As you know an ungrouped data is a set of raw data which is not categorized or divided into class intervals.
The formula to find the mean deviation for an individual series is. So the mean of the data would be 8 9 6 12 19 2 54 2 27. M d frac sum x m n sum summation.
M d frac sum x m n sum summation.
For example consider you have the following data set. As mentioned earlier mean deviation measures the dispersion of data about a measure of central tendency. In this video you can learn how to calculate mean deviation from mean for ungrouped and grouped data. To calculate mean deviation about mean for ungrouped data start by finding the mean of your data set by adding all of the data points together and then dividing by the total number of points.
