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Question
CBSEENMA11015276

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.