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
E. 2.33
If X and Y are independent then SD (X − Y) is________________?
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)−−−−−−−−−−−−−−−√
18) If Y=−8X − 5 and SD of X is 3, then SD of Y is
Standard deviation is calculated from the Harmonic Mean (HM) ________________?
Standard deviation is calculated from the Harmonic Mean (HM) ________________?
A. Always
B. Sometimes
C. Never
D. None of these
Variance remains unchanged by change of________________?
Variance remains unchanged by change of________________?
A. Origin
B. Scale
C. Both
D. None of these
Lowest value of variance can be________________?
Lowest value of variance can be________________?
A. 1
B. -1
C. 3
D. -3
E. 0
The sum of squared deviations of a set of n values from their mean is__________________?
The sum of squared deviations of a set of n values from their mean is__________________?
A. Zero
B. Maximum
C. Least
D. None
Mean Deviation, Variance and Standard Deviation of the values 4, 4, 4, 4, 4, 4 is_________________?
Mean Deviation, Variance and Standard Deviation of the values 4, 4, 4, 4, 4, 4 is_________________?
A. 4
B. 8
C. 2
D. 12
E. 0
The measure of dispersion is changed by a change of_____________?
The measure of dispersion is changed by a change of_____________?
A. Origin
B. Scale
C. Algebraic Signs
D. None
A measure of dispersion is always ________________?
A measure of dispersion is always ________________?
A. Zero
B. Positive
C. Negative
D. Infinity
The algebraic sum of deviations from mean is_____________?
The algebraic sum of deviations from mean is_____________?
A. Maximum
B. Zero
C. Minimum
D. Undefined