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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