i. The technique used to measure the strength of the relationship between two sets of variables using the coefficient of correlation and the coefficient of determination is called regression analysis. ii. In order to visualize the form of the regression equation, we can draw a scatter diagram.
iii. A regression equation may be determined using a mathematical method called the.
A) (i), (ii), and (iii) are all correct statements.
B) (i) and (ii) are correct statements but not (iii).
C) (i) and (iii) are correct statements but not (ii).
D) (ii) and (iii) are correct statements but not (i).
E) (i), (ii), and (iii) are all false statements.

Question

Quizplus · Accepted Answer

Statement i is incorrect because regression analysis is used to estimate the relationships among variables, not just to measure the strength of the relationship between two sets of variables—that's more directly the role of correlation analysis. Statement ii is correct; scatter diagrams are indeed used to visualize the relationship between variables, which can help in understanding the form of the regression equation. Statement iii is also correct, as regression equations are determined using mathematical methods, though the specific method wasn't named in the statement.

I the Technique Used to Measure the Strength of the Relationship