1. A study examined consumption levels of oil and carbon dioxide emissions for sample of counties. The response variable in this study is _______
A. oil B. oil consumption C. carbon dioxide emissions D. countries E none of the above.
2. A supermarket chain gathers data on the amount they spend on promotional material (e.8., coupon etc.) and sales revenue generated each quarter. The predictor variable is _______
A. sales revenue B. amount spent on promotional material C. number of coupons offered D. supermarket chains
Answer 1
Oil consumption and countries is an independent variable while the carbon dioxide emissions level is dependent on oil consumption hence carbon dioxide emissions is the response variable. Hence option C is correct
Answer 2
Predictor variable is the independent variable based on which dependent variables change. Hence amount spent on promotion material is the predictor variable. Hence option B is correct
A study examined consumption levels of oil and carbon dioxide emissions for sample of counties
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