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Question1. Regression analysis was applied between sales (in $10,000) and advertising (in $100) and the following regression function was obtained. Y = 50 + 8 X. Based on the above estimated regression line if advertising is $1,000, then the point estimate for sales (in dollars) is
[A] $130,000
[B] $1,300,000
[C] $8,050
[D] $130
Question2: If the coefficient of correlation is a negative value, then the coefficient of determination
[A] Can be either negative or positive
[B] Must be positive
[C] Must also be negative
[D] Must be zero
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