Mean Deviation About Mean Formula For Grouped Data. To find the value of mean divide this sum by the total number of observations in the data. The mean deviation states how close or scattered are the data points from the mean value of the observations.
Sum of upper and lower limit of the class 2. To find the value of mean divide this sum by the total number of observations in the data. X i a deviation of ith class.
The step deviation method is used to easily calculate the mean compared to the traditional method.
The mean of x is denoted by x and is given by. Let x i f i i 1 2 n be given frequency distribution. The mean deviation states how close or scattered are the data points from the mean value of the observations. The mid point is calculated as.
