Question

# From the receipts of an Oxxo store it appears that from 8 to 10 in the morning purchases are $x$ 54, 48, 58, 50, 25, 47, 62, 75, 46, 60, 70, 62, 67, 68, 39, 35, 56, 66, 33, 62, 65, 67 $AND$ 1,2,3,4,5,6,7,8,9,10,11,12,13,14,15,16,17,18,19,20,21,22 Find Half Variance Determine the correlation If it is greater than .80, perform linear regression

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## Answer to a math question From the receipts of an Oxxo store it appears that from 8 to 10 in the morning purchases are $x$ 54, 48, 58, 50, 25, 47, 62, 75, 46, 60, 70, 62, 67, 68, 39, 35, 56, 66, 33, 62, 65, 67 $AND$ 1,2,3,4,5,6,7,8,9,10,11,12,13,14,15,16,17,18,19,20,21,22 Find Half Variance Determine the correlation If it is greater than .80, perform linear regression

Fred
4.4
The results from analyzing the Oxxo store purchase data between 8 to 10 in the morning are as follows:
- Median $Half$ of purchases: 59
- Variance of purchases: 170.18
- Correlation coefficient between the time stamps and purchases: 0.18

Given that the correlation coefficient is 0.18 , which is much less than 0.80 , we do not proceed with linear regression as the correlation is not strong enough to justify it.

\textbf{Answer}: We do not proceed with linear regression.

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