Question
Calculate the mean deviation about median age for the age distribution of 100 persons given below:
Age 16-20 21-25 26-30 31-35 36-40 41-45 46-50 51-55
Number 5 6 12 14 26 12 16 9
Solution
Since the difference between the lower limit of any class with the upper limit of its preceeding class is 1.
∴ we shall subtract 0.5 from lower limit and adding 0.5 to the upper limit of each class interval to convert the data into continuous frequency distribution.
