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26. F-test is a
Probability test
Variance test
Factor analysis
None of the above
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27. Which one among the following is a small sample
5
10
29
All of the above
28. The standard error of the difference between the proportions of two variable can be computed by
SE(P1-P2 )= √(Pq[1/n1 + 1/n2 ] )
SE=P-1√((n.Pq)/100)
SE=√(p/2+q/2)
SE=√(npq/2)
29. The probable error of the coefficient of correlation is obtained as
0.6745 (1- N2 /√r )
0.6745 (1- r2 /√N )
0.6547 (1- r2 /√N )
0.6745 (1 + N2 /√r )
30. Which one of the following is a relative measure of dispersion
Standard deviation
Variance
Co-efficient of variation
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