A researcher, who is interested in studying how humidity affects the eating behavior of rats, obtains 25 rats to participate in a research study. The group of 25 rats is called a………………….. . a....

A researcher, who is interested in studying how humidity affects the eating behavior of rats, obtains 25 rats to participate in a research study. The group of 25 rats is called a………………….. .

a. statistic

b. parameter