What is a lurking variable?
a. a lurking variable is a quantitative variable that has either a finite number of possible values or a countable number of possible values. in addition, lurking variables are typically equal to zero, or almost equal to zero.
b. a lurking variable is a quantitative variable that has an infinite number of possible values that are not countable. in addition, lurking variables are typically very large numbers that make them difficult, if not impossible, to include in a study.
c. a lurking variable is a response variable that was not considered in a study, but is also affected by the casual relationship of the explanatory variables in the study. in addition, lurking variables are typically related to response variables in the study.
d. a lurking variable is an explanatory variable that was not considered in a study, but that affects the value of the response variable in the study. in addition, lurking variables are typically related to explanatory variables in the study.