Q. 54.0( 16 Votes )

Rahamatchacha will go to retail market, for selling mangoes kept in 50 packing boxes. Let us write the number of boxes contained varing number of mangoes in the table given below.



Let us write the mean number of mangoes kept in 50 packing boxes. [using any method]

Answer :

Arithmetic mean of grouped frequency distribution is found by taking out midpoints of the class intervals.

Let’s create a table showing frequencies and fixi.



So, we have


∑fixi = 2736


∑fi = 50


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



Using the above values, we get



Mean = 54.72


Thus, mean is 54.72.

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