Two variables are unrelated if their graph is
i.a vertical line.
ii.a 45 degree line.
iii.a horizontal line.
A) i only
B) ii only
C) iii only
D) i and iii
E) i, ii, and iii

Question

Quizplus · Accepted Answer

Two variables are unrelated if changes in one variable do not result in changes in the other. This is represented graphically by either a vertical line (indicating that the variable on the x-axis does not affect the variable on the y-axis) or a horizontal line (indicating that the variable on the y-axis does not affect the variable on the x-axis). A 45-degree line, however, suggests a perfect positive relationship between the two variables, where changes in one variable are matched by proportional changes in the other.

Two Variables Are Unrelated If Their Graph Is