When r is zero, the regression lines cut each other making an angle of
A. 30°
B. 60°
C. 90°
D. None of these
Answer: Option D
A. 30°
B. 60°
C. 90°
D. None of these
Answer: Option D
A. Field trails
B. Exhibitions
C. Competition
D. Fair
The intelligency, ability or efficiency can be measured by use of
A. Median
B. G.M.
C. Weighted H.M.
D. Geometric mean
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