A researcher reports an F-ratio with df = 2,18 from an independent-measures research study.Based on the df values,how many treatments were compared in the study and what was the total number of subjects participating in the study?
A)2 treatments and 19 subjects
B)2 treatments and 20 subjects
C)3 treatments and 21 subjects
D)3 treatments and 22 subjects

Question

A researcher reports an F-ratio with df = 2,18 from an independent-measures research study.Based on the df values,how many treatments were compared in the study and what was the total number of subjects participating in the study?​
A)​2 treatments and 19 subjects
B)​2 treatments and 20 subjects
C)​3 treatments and 21 subjects
D)​3 treatments and 22 subjects

Quizplus · Accepted Answer

The df values (2,18) indicate that there were 3 treatments (numerator df = 2) and a total of 21 subjects (denominator df = 18 + number of treatments = 20). Therefore, the correct answer is C, which indicates 3 treatments and 21 subjects.

A Researcher Reports an F-Ratio with Df = 2,18 from an Independent-Measures