Question

select all that apply to the following statement. there is a low correlation between cheating and final grades in math256. a. correlation requires both variables to be either qualitative or quantitative. b. the correlation has no unit of measurement; it is just a number. c. the correlation must specify which is the explanatory variable and which is the response variable. d. correlation requires both variables to be quantitative. e. there could be a presence of lurking variables in this study.

Explanation:

Correlation measures the strength and direction of a linear relationship between two quantitative variables. It has no unit of measurement. Lurking variables can affect the relationship between the observed variables. It doesn't require specifying explanatory and response variables to calculate a correlation coefficient.

Answer:

B. The correlation has no unit of measurement; it is just a number.
D. Correlation requires both variables to be quantitative.
E. There could be a presence of lurking variables in this study.