A researcher is studying the effect of including a bonus product on people's tendency to purchase personal care items (e.g., shampoo, deodorant, etc.) . The researcher randomly assigns male and female consumers to be asked to buy the product with the bonus or to be asked to buy the product without the bonus. The researcher then calculates the proportion of people in each condition that purchase the product. The independent variable in this study is:

A) the proportion of people that purchase the product.
B) personal care items.
C) gender.
D) the presence or absence of a bonus.

Question

Kylie Hobgood · Accepted Answer

Final Answer : D, Explanation :  The independent variable is the condition manipulated by the researcher to observe its effect on the dependent variable. In this study, the manipulation is the presence or absence of a bonus product, making it the independent variable.

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