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प्रश्न
If the values of two variables move in the opposite direction then the correlation is said to be
विकल्प
Negative
Positive
Perfect positive
No correlation
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उत्तर
Negative
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संबंधित प्रश्न
Find the coefficient of correlation for the following:
| X | 78 | 89 | 96 | 69 | 59 | 79 | 68 | 62 |
| Y | 121 | 72 | 88 | 60 | 81 | 87 | 123 | 92 |
If r(X,Y) = 0 the variables X and Y are said to be
The correlation coefficient is
The variable whose value is influenced (or) is to be predicted is called
The variable which influences the values or is used for prediction is called
Scatter diagram of the variate values (X, Y) give the idea about
If r = – 1, then correlation between the variables
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 |
Calculate the correlation coefficient from the following data:
∑X = 125, ∑Y = 100, ∑X2 = 650, ∑Y2 = 436, ∑XY = 520, N = 25
