A. ∑pn(Po + Pn)/ ∑pn (Po + Pn)
B. ∑qn(qo + qn)/∑qn(po + pn) x100
C. ∑pn(qo + qn)/∑pn
D. ∑qn(Po + Pn)/ ∑qo (Po + Pn) x100
Statistics Mcqs
Absolute sum of deviations is minimum from _______________?
A. Coefficient of variance
B. S.D. of x
C. Mean
D. Normal
The Harmonic Mean of two number is ‘a’ and ‘b’ is given by ____________?
A. a+b/2
B. 2ab/a+b
C. √ab
D. None of these
Normal distribution has ___________?
A. 1 parameter
B. 2 parameter
C. 3 parameter
D. 4 parameter
For t distribution, increasing the sample size, the affect will be on ?
A. Standard Error of the Means
B. The t-ratio
C. Degrees of Freedom
D. All Above
Cumulative frequencies are_________________?
A. Increasing
B. Non- increasing
C. Decreasing
D. None of these
The probability of getting exactly three tails when three balanced coins are tossed once _______________?
A. 1/8
B. 2/8
C. 5/8
D. 7/8
Geometric means of X1 and X2 is________________?
A. X1+X2
B. X1+X2x
C. X1+X2−−−−−−−√
D. X1×X2−−−−−−−√
E. X1−−−√+X2−−−√
If y = bx + a the mean deviation of y is_____________?
A. S.D. of y
B. var (x)
C. S.D. of x
D. M.D.of x
A contractor employs 20 male, 15 female and 5 children in his factory. Male wages are Rs. 10 per day, female Rs. 8 per day, and children Rs. 3 per day. The weighted x of wages paid per day will be_____________?
A. 3.86
B. 8.37
C. 9.21
D. 10.63
