(A) Origin
(B) Scale
(C) Both
(D) None of these
Tag: Statistics Mcqs
If a and b are two constants, then Var(a+bX) is__.
(A) a±bVar(X)
(B) Var(a)±Var(X)
(C) ±bVar(X)
(D) b2Var(X)
Standard deviation is calculated from the Harmonic Mean (HM) __.
(A) Always
(B) Sometimes
(C) Never
(D) None of these
If X and Y are independent then SD (X − Y) is__.
(A) SD(X)−SD(Y)
(B) SD(X)+SD(Y)
(C) SD(X)+SD(Y)−−−−−−−−−−−−−−√
(D) Var(X)+Var(Y)−−−−−−−−−−−−−−−√
If the standard deviation of the values 2, 4, 6, 8 is 2.58, then the standard deviation of the values 4, 6, 8, 10 is__.
(A) 0
(B) 2.58
(C) 5
(D) 4.66
If all values are same then the measure of dispersion will be__.
(A) 1
(B) 0
(C) Mean
(D) Mode
__is used to compare the variation or dispersion in two or more sets of data even though they are measured in different units.
(A) Range
(B) Standard Deviation
(C) Coefficient of Variation
(D) Mean Deviation
Second moment about mean is__.
(A) Standard Deviation
(B) Variance
(C) Coefficient of Variation
(D) None of these