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A company is interested in forecasting sales in the final quarter of the year based on the first three quarters by fitting a

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F16 Н K D с А 1 Quarter- 2 B Sales-Y 238 276 SUMMARY OUTPUT 1 2 estimated y for x=4 345.33 4 3 309 5 6 7 Regression Statistic

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.

.........................................................................................

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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