STATISTICAL TECHNIQUES AND TOOLS
REGRESSION
|
Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
|
If there is NO correlation between 2 variables, the correlation coefficient is ____
|
|
1
|
|
|
-1
|
|
|
0
|
|
|
None of the above
|
Explanation:
Detailed explanation-1: -A correlation coefficient of zero indicates that no linear relationship exists between two continuous variables, and a correlation coefficient of −1 or +1 indicates a perfect linear relationship.
Detailed explanation-2: -If there is no correlation between two variables, the line of best fit will have zero slope i.e. it will be parallel to the x-axis.
Detailed explanation-3: -A correlation coefficient of zero indicates the absence of a relationship between the two variables being studied. If two variables have a correlation coefficient of zero, then it is impossible to predict if or how one variable will change in response to changes in the other variable.
There is 1 question to complete.