Weekly sales of ten-grain bread at the local organic food market are in the table below. Based
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Question:
Weekly sales of ten-grain bread at the local organic food market are in the table below. Based on this data, forecast week 9 using regression analysis.
WEEK___________________SALES
1………………………………….415
2………………………………….389
3………………………………….367
4………………………………….352
Calculate:
a =
b =
Estimated regression equation=
Forecast for week 9=
*** Do not calculate the correlation coefficient or the coefficient of determination. If the correlation coefficient in a problem with the same variables as above was equal to -.8; how would you interpret it. What would the coefficient of determination be? How would you interpret it?
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