Question

In a partially destroyed laboratory record of an analysis of correlation data, only the

following results are legible : Variance of X = 9,

Regression equations : 4X – 5Y + 33 = 0 and 20X – 9Y = 107

On the basis of the above information, the value of SDy is :

(a) 5 (b) 7 (c) 4 (d) None​

Answer 1

Answer:

d . none because that I writeen the reason on the above picture