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Problem

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Textbook Expert
Textbook ExpertVerified Tutor
6 Nov 2021

Given information

First of all, we have to calculate the variance of both the DVDs rental stores which are given below :

 

Step-by-step explanation

Step 1.

For Store A

         
0 0.03 0 2.45 6.0025 0
1 0.50 0.50 -1.45 2.1025 1.05125
2 0.24 0.48 -0.45 0.2025 0.0486
3 -0.51 -1.53 0.55 0.3025 -0.154275
4 0.70 2.8 1.55 2.4025 1.68175
5 0.04 0.28 2.55 6.5025 0.2601
Total          

The approximate sum of the variance of Store A is:

0+1.05125+0.0486-0.154275+1.68175+0.2601=2.887425

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Introductory Statistics
OER Edition, 2013
Openstax
ISBN: 9781938168208

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