The coefficients of rank correlation bet...

The coefficients of rank correlation between marks in Mathematics and marks in Physics obtained by a certain group of students is 0.8. If the sum of the squars of the difference in the rank is given to be 33, then find the number of students in the group.

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ML KHANNA-CORRELATION AND REGRESSION -PROBLEM SET (1) (MCQ)

A computer while calculating r(xy) from 25 pairs of observations obtai...
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The coefficient of correlation between X and Y is 0.6. Their covarianc...
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The coefficients of rank correlation between marks in Mathematics and ...
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In two sets of variables x and y with 50 observations each, the follow...
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Two random variables have the least squares regression lines 3x+2y-26=...
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The lines of regression of y on x and x on y are respectively y=x and ...
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The regression lines of x on y and y on x are x=4y+5 and y=kx+4 respec...
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For two variables x and y, the two regression lines are x+2y-5=0, 2x+3...
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For 10 observations on price (x) and supply (y) the following data wer...
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If two lines of Regression are respectively y=ax+b and x=alphay+beta. ...
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r(xy)lt0, according as
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The correlation between two variables x and y is given to be r. The va...
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If U=aX+b, and V=-cY+d where a and c positive. If r(U,V)=0.6, then r(X...
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Let X and Y be two variables with the same variance and let U=X+Y,V=X-...
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If Z=aX+bY and r is the correlation coefficient between X and Y, then ...
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If X and Y are two independent variables with sigma(X)^(2)=36,sigma(Y)...
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The coefficient of correlation is independent of
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If both the regression coefficients b(YX) and b(XY) are positive, then
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If the slopes of the line of regression of Y and X and of X and Y are ...
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If the two lines of regression are 3x+y=15 and x+4y=3, then value of x...
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