Question

calculale the Rank correlatia the following Data:

X Y
180. 170
155. 165
170. 180
174. 180
160. 164
172. 169
166. 170
172. 170
170. 174​

Answer 1

Answer:

Regression equation of Y on X Y - ¯ Y Y¯ = bxy(X - ¯ X X¯)

Y – 169 = 0.610 (X – 168.6)

Y – 169 = 0.610X – 102.846

Y = 0.610X – 102.846 + 169

Y = 0.160X + 66.154 … (1)

To get son’s height (Y) when the father height is X = 164 cm.

Put X = 164 cm in equation (1) we get

Son’s height = 0.610 × 164 + 66.154

= 100.04 + 66.154 cm = 169.19 cm.

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