So the linear regression equation is y = 203.33 + 35.5 x
99.8 % variation in sales can be explained by the model. So it's a very good fit we must say.
When the quarter is 4 we observed the estimated value of sales is 345.
We processed the whole problem in MS Excel
Step1 - Two columns are typed
Step 2 - Go to Data - Data analysis- Regression- ok
Step 3 - The dialog box appears where the desired boxes are filled and click ok.
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Thanks for the problem. Let me know if you have any doubt and please give me a like if I deserve. Thanks.
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