# RESEARCH METHODOLOGY

## STATISTICAL TECHNIQUES AND TOOLS

### CORRELATION COEFFICIENT COEFFICIENT OF DETERMINATION

 Question [CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
If two variables, x and y, have a very strong linear relationship, then
 A there is evidence that x causes a change in y. B there is evidence that y causes a change in x. C there might not be any causal relationship between x and y. D None of these alternatives is correct.
Explanation:

Detailed explanation-1: -A linear equation in two variables can be described as a linear relationship between x and y, that is, two variables in which the value of one of them (usually y) depends on the value of the other one (usually x). In this case, x is the independent variable, and y depends on it, so y is called the dependent variable.

Detailed explanation-2: -If r = 1, then there is a perfect positive linear relationship between x and y. If r = 0, then there is no linear relationship between x and y.

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