Marks obtained by 40 students in a short assessment.

Marks obtained by 40 students in a short assessment are given below, where a and b are two missing data.

If the mean of the distribution is 7.2, find a and b.

Solution:

More Solutions:

• Calculate the mean and the median.
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• Find the median for the following distribution.
• Calculate the mean and the median for the following distribution :
• From the following frequency distribution.
• For the following frequency distribution.