Tag: correlation analysis
Questions Related to correlation analysis
Correlation is commonly classified into ___ and ____ correlation.
If the scatter points are widely dispersed around the line, the correlation is _______.
Correlation is said to be ______ when the variables move together in the opposite direction.
Correlation is said to be ________ when the variables move together in the same direction.
When the income rises, consumption also rises. This is an example of ________.
A ________ visually presents the nature of association without giving any specific numerical value.
Regression analysis was first used by ____________.
From the following data find correlation coefficient between X and Y.
| X | Y |
|---|---|
| 21 | 10 |
| 24 | 14 |
| 28 | 18 |
| 30 | 20 |
| 32 | 23 |
If all the points in a scatter diagram lie on a line, the correlation is perfect and is said to be _______.
When r=0, the lines of regression will____________.