Answer :

We need to find the average using any method of calculation.

For the data given, the average can be calculated using direct method as the data is small. Using direct method for the given answer will provide us easier and faster calculation.


Let’s create a table showing frequencies and fixi.



So, we have


∑fixi = 4340


∑fi = 100


Using the direct method, we have the formula for arithmetic mean.



Using the above values, we get



Mean = 43.4


Thus, average is 43.4.

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