In what type of test is the variable of interest the difference between the values of the observations rather than the observations themselves?

A) A test for the equality of variances from two independent populations.
B) A test for the difference between the means of two dependent populations.
C) A test for the difference between the means of two independent populations.
D) All of these.
E) None of these.

Difference Between Values

The subtraction result of one value from another, often used to measure variation or change in data sets.

Dependent Populations

Populations in which members or samples do not independently exist from one another, often implying some relationship or mutual influence between the data sets.

Observations

Data collected during an experiment or study, often representing measured values of the variables of interest.