If sum of the product of deviation of x and y series from their means, i.e., Ʃxy is zero the coefficient of correlation shall be
A. +1
B. 0
C. -1
D. None of these
Answer: Option B
A. +1
B. 0
C. -1
D. None of these
Answer: Option B
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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