1.

If mean of X = 30 mean of y= 20, bxy=0.5 then estimate value of x for y=10 is

Answer»

Answer:

Let

x

ˉ

=25,

y

ˉ

=30

b

yx

=1.6

b

xy

=0.6

Repression EQN yon x will be

y−

y

ˉ

=b

yx

(x−

x

ˉ

)

y−30=1.6(x−25)

y−30=1.6x−40

y=1.6x−10

Value of y when x = 60

y=1.6×60−10

y=86

Coefficient of correlation between x and y

The correlation coefficient r is the geometric mean of the REGRESSION coefficient.

r=±

(b

yx

b

xy

)

r=±

(1.6×0.6)

r=±

96

Step-by-step explanation:

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