Q. 24.5( 34 Votes )

A survey was cond

Answer :

Let us find class marks (xi) for each interval by using the relation.

Class mark (xi) =


Now we may compute xi and fixi as follows:



Fro, the table we may observe that,


fi = 20


fixi = 162


Mean, X̅ =


= = 8.1


So mean number of plants per house is 8.1


We have used for the direct method values xi and fi are very small.


Rate this question :

How useful is this solution?
We strive to provide quality solutions. Please rate us to serve you better.
Try our Mini CourseMaster Important Topics in 7 DaysLearn from IITians, NITians, Doctors & Academic Experts
Dedicated counsellor for each student
24X7 Doubt Resolution
Daily Report Card
Detailed Performance Evaluation
caricature
view all courses