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प्रश्न
The correlation coefficient is
विकल्प
r(X, Y) = `(sigma_"x" sigma_"y")/("cov"("x","y"))`
r(X, Y) = `("cov"("x","y"))/(sigma_"x" sigma_"y")`
r(X, Y) = `("cov"("x","y"))/(sigma_"y")`
r(X, Y) = `("cov"("x","y"))/(sigma_"x")`
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उत्तर
r(X, Y) = `("cov"("x","y"))/(sigma_"x" sigma_"y")`
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संबंधित प्रश्न
In the following data one of the value of y is missing. Arithmetic means of x and y series are 6 and 8 respectively. `(sqrt(2) = 1.4142)`
| x | 6 | 2 | 10 | 4 | 8 |
| y | 9 | 11 | ? | 8 | 7 |
Estimate missing observation.
Calculate the coefficient of correlation for the ages of husbands and their respective wives:
| Age of husbands | 23 | 27 | 28 | 29 | 30 | 31 | 33 | 35 | 36 | 39 |
| Age of wives | 18 | 22 | 23 | 24 | 25 | 26 | 28 | 29 | 30 | 32 |
Example for positive correlation is
If the values of two variables move in the opposite direction then the correlation is said to be
The variable which influences the values or is used for prediction is called
The correlation coefficient
The coefficient of correlation describes
Calculate the correlation coefficient from the data given below:
| X | 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 | 9 |
| Y | 9 | 8 | 10 | 12 | 11 | 13 | 14 | 16 | 15 |
A measure of the strength of the linear relationship that exists between two variables is called:
State and explain the different kinds of Correlation.
