In a partially destroyed laboratory record of an analysis of correlation data, the following results only are legible : Variance ofx=16. Regression equations : 8x-10y+2=0, 40x-18y=22. What were @) the mean value of x and y, (b) the standard deviation of y and. (c) the coefficient of correlation between x and y ?

Advanced Engineering Mathematics
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ISBN:9780470458365
Author:Erwin Kreyszig
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Chapter2: Second-order Linear Odes
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In a partially destroyed laboratory record of an
analysis of correlation data, the following results only are
legible :
Variance of x=16.
Regression equations : 8x-10y+2=0, 40x-18y=22.
What were
(a) the mean value of x and y,
(b) the standard deviation of y and
(c) the coefficient of correlation between x and y ?
Transcribed Image Text:In a partially destroyed laboratory record of an analysis of correlation data, the following results only are legible : Variance of x=16. Regression equations : 8x-10y+2=0, 40x-18y=22. What were (a) the mean value of x and y, (b) the standard deviation of y and (c) the coefficient of correlation between x and y ?
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