Advertisements
Advertisements
प्रश्न
If r(X,Y) = 0 the variables X and Y are said to be
पर्याय
Positive correlation
Negative correlation
No correlation
Perfect positive correlation
Advertisements
उत्तर
No correlation
APPEARS IN
संबंधित प्रश्न
Calculate the correlation coefficient for the following data.
| X | 5 | 10 | 5 | 11 | 12 | 4 | 3 | 2 | 7 | 1 |
| Y | 1 | 6 | 2 | 8 | 5 | 1 | 4 | 6 | 5 | 2 |
Calculate the coefficient of correlation between X and Y series from the following data.
| Description | X | Y |
| Number of pairs of observation | 15 | 15 |
| Arithmetic mean | 25 | 18 |
| Standard deviation | 3.01 | 3.03 |
| Sum of squares of deviation from the arithmetic mean | 136 | 138 |
Summation of product deviations of X and Y series from their respective arithmetic means is 122.
The correlation coefficient is
The variable which influences the values or is used for prediction is called
The correlation coefficient
The person suggested a mathematical method for measuring the magnitude of linear relationship between two variables say X and Y is
Find the coefficient of correlation for the following data:
| X | 35 | 40 | 60 | 79 | 83 | 95 |
| Y | 17 | 28 | 30 | 32 | 38 | 49 |
Calculate the correlation coefficient from the following data:
∑X = 125, ∑Y = 100, ∑X2 = 650, ∑Y2 = 436, ∑XY = 520, N = 25
The value of the coefficient of correlation r lies between:
Define Correlation.
