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 line found using the is the best-fitting line because the sum of the squares of the vertical deviations between the actual and estimated values is minimized.
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

The technique described in (i) is correlation analysis, not regression analysis. Regression analysis is used to model the relationship between a dependent variable and one or more independent variables. (ii) is correct because scatter diagrams are indeed used to visualize the relationship between variables, which can help in understanding the form of the regression equation. (iii) is correct because it describes the principle of least squares, which is used in regression analysis to find the best-fitting line by minimizing the sum of the squares of the vertical deviations.

I the Technique Used to Measure the Strength of the Relationship