8. If plotted on a diagram, which of the following regression equations will sho

Question

8. If plotted on a diagram, which of the following regression equations will show a downward sloping regression A) Y=-5+0.50X. B) Y= 10+0.60x. C) Y +0.70X 20. line 9. In a simple regression analysis it was obtained that Sales 830 105 Advt, where Advt means advertisement expenditure. From this estimated equation it can be inferred that A) when sales increases advertisement also increases. B) when advertisement increases by 1 unit, on average, sales increases by 105 units. C) advertisement and sales have a strong relationship. D) when advertisement increases sales increases by 105 times. 10. Coefficient of determination (R) value obtained from a regression analysis A) can vary from-1 to +1. B) can never be I. C) can vary from 0 to +1. D) is described by none of the above.

Explanation / Answer

8) Option-D) . Because the slope here is negative, which means downward slopping line

9) Option-B)

10) Option-C)

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