Q. 14.3( 41 Votes )

A survey was conducted by a group of students as a part of their environment awareness programmed, in which they collected the following data regarding the number of plants in 20 houses in a locality. Find the mean number of plants per house.


Answer :

Let’s find mean of the data using direct method.

First, construct a table for ease of calculation.



Mean is given by



Mean = 162/20


Mean = 8.1


Thus, mean number of plants per house is 8.1.


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