X Y
25 18
22 15
28 20
26 17
35 22
20 14
22 16
40 21
20 15
18 14
a) Calculate regression equation x on Y and Y on X
b) Estimate X when Y =20
C) Estimate Y when X =20
d) calcalate karl peasson's coefficient of correlation
e) check whether Regression line is a good fit.
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Answer: X = c + dy, value c is the average value of X, when Y is zero
Step-by-step explanation:
The regression equation X on Y is X = c + dy is used to estimate value of X when Y is given and a, b, c and d are constant. Y = a + bx can also be interpreted as 'a' is the average value of Y when X is zero.
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