The validity of regression coefficientis tested by
A. z-test
B. t-test
C. $${\chi ^2}$$-test
D. Both A and B
Answer: Option D
A. z-test
B. t-test
C. $${\chi ^2}$$-test
D. Both A and B
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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