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Find the regression coefficients b(yx) a...

Find the regression coefficients `b_(yx) and b_(xy)` between x and y for the data `n =8, sum x=36, sumy=48, sumxy=225, sumx^(2)=146, sumy^(2)=324`.

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Knowledge Check

  • Covariance (x,y) between x and if sumx=15, sum y=40, sumxy=110, n=5 is

    A
    22
    B
    `-2`
    C
    2
    D
    None of these

  • If the regression equation x on y is 3x+2y=26 then b_(xy) equals to

    A
    `3//2`
    B
    `2//3`
    C
    `-3//2`
    D
    `-2//3`

  • If r_(xy) between two variates x and y is 0.6, cov (x,y)=4.8, sigma_(x)^(2)=9 , then sigma_(y) is

    A
    `(8)/(9)`
    B
    `(5)/(8)`
    C
    `(8)/(3)`
    D
    none of these

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    For observations of pairs (x,y) of the variables x and y, the following results are obtained sumx=100, sumy=70, sumx^(2)=2500, sumy^(2)=2000, sumxy=100 and n =20 . Find the equation of the line of regresion of X and Y. Estimate the value of x if y=4.

    Find (i) mean vecx and vecy , (ii) regression coefficeint b_(yx) and b_(xy) , (iii) coefficeint of correlation between x and y for the following two regression lines 2x+3y-10=0 and 4x+y-5=0

    Find the regression coefficient b_(yx) and b_(xy) and the two lines of regression for the following data.Also compute the correlation coefficient

    if a=sum x^(n),b=sum x^(n),c=sum(xy)^(n)

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