The variance of 5 numbers is 10. If each number is divided by 2, then variance of new number is_____________?

Related Mcqs:

1. The variance of 5 numbers is 10. If each number is divided by 2, then the variance of new numbers is______________?

   A. 20
   B. 5
   C. 2.5
   D. 5.5
   E. 0

2. The mean of 10 numbers is 9, then sum of these numbers will be__________________?

   A. 9
   B. 0.9
   C. 70
   D 90

3. 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

4. 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

5. 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

6. If the standard deviation of a population is 9, the population variance is_____________?

   A. 9
   B. 3
   C. 21
   D. 81

7. 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

8. Two digit random numbers are ________________?

   A. 2
   B. 10
   C. 99
   D. 100

9. _________ are the numbers obtained by some random process?

   A. Two- digit number take
   B. Random table
   C. Pack
   D. Non of these

10. The index numbers are used to measure seasonal and cyclical variations in __________?

    A. Commodities
    B. Time Series
    C. Whole sale
    D. Realtives