(A) Zero
(B) Positive
(C) Negative
(D) Infinity
Tag: Statistics Multiple Choice Questions
The measure of dispersion is changed by a change of__.
(A) Origin
(B) Scale
(C) Algebraic Signs
(D) None
Mean Deviation, Variance and Standard Deviation of the values 4, 4, 4, 4, 4, 4 is__.
(A) 8
(B) 2
(C) 12
(D) 0
The sum of squared deviations of a set of n values from their mean is__.
(A) Zero
(B) Maximum
(C) Least
(D) None
Lowest value of variance can be__.
(A) 1
(B) -1
(C) 3
(D) 0
Variance remains unchanged by change of__.
(A) Origin
(B) Scale
(C) Both
(D) None of these
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