Advertisements
Advertisements
प्रश्न
If r = – 1, then correlation between the variables
पर्याय
perfect positive
perfect negative
negative
no correlation
Advertisements
उत्तर
perfect negative
APPEARS IN
संबंधित प्रश्न
Calculate the correlation coefficient for the following data.
| X | 25 | 18 | 21 | 24 | 27 | 30 | 36 | 39 | 42 | 48 |
| Y | 26 | 35 | 48 | 28 | 20 | 36 | 25 | 40 | 43 | 39 |
Example for positive correlation is
If the values of two variables move in same direction then the correlation is said to be
If r(X,Y) = 0 the variables X and Y are said to be
The correlation coefficient from the following data N = 25, ∑X = 125, ∑Y = 100, ∑X2 = 650, ∑Y2 = 436, ∑XY = 520
The correlation coefficient is
The variable whose value is influenced (or) is to be predicted is called
The person suggested a mathematical method for measuring the magnitude of linear relationship between two variables say X and Y is
The coefficient of correlation describes
If both variables X and Y increase or decrease simultaneously, then the coefficient of correlation will be:
