A. 20
B. 5
C. 2.5
D. 5.5
E. 0
Related Mcqs:
- The variance of 5 numbers is 10. If each number is divided by 2, then variance of new number is_____________?
A. 20
B. 5
C. 2.5
D. 0 - The mean of 10 numbers is 9, then sum of these numbers will be__________________?
A. 9
B. 0.9
C. 70
D 90 - Suppose for 40 observations, the variance is 50. If all the observations are increased by 20, the variance of these increased observation will be______________?
A. 50
B. 70
C. 50/20
D. 50-20 = 30
E. 50 - Sample variance S2 is unbiased estimator of population variance 26 because ________________?
A. E(S2) = s2
B. E(u) = X
C. E(P) = P
D. Ux = u - suppose for 40 observation, the variance is 50. If all the observation are increased by 20, the variance of these increased observation will be_________?
A. 50
B. 70
C. 50/20
D. 50-20=30 - The middle value of an ordered array of numbers is the____________?
A. Mode
B. Mean
C. Median
D. Mid Point - Which of the following describe the middle part of a group of numbers ?
A. Measure of Variability
B. Measure of Central Tendency
C. Measure of Association
D. Measure of Shape - Arithmetic mean of two positive numbers “X” and “Y” is_________________?
A. ab2
B. 2a2
C. (a+b)/2
D. a−b2
E. 2a+b - The average of first n natural numbers is_______________?
A. n+12
B. n2
C. All of the above
D. None of these - The Harmonic Mean of any two numbers is________________?
A. a+b2
B. 2aba+b
C. ab−−√
D. a+b
Advertisement