Suppose for 40 observations, the variance is 50. If all the observations are increased by 20, the variance of these increased observation will be______________?

Related Mcqs:

1. 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

2. 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

3. 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

4. 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

5. The Geometric Mean of -2, 4, 03, 6, 0 will be______________?

   A. -3
   B. 0
   C. 3
   D. Cannot be Computed
   E. None of these

6. If x is 4 and the distribution is 2, 3, 4, 5, 6, the sum of squared deviations from the x will be______________?

   A. 8
   B. 10
   C. 6
   D. 12

7. Which of the following is not based on all the observations ?

   A. Arithmetic Mean
   B. Geometric Mean
   C. Harmonic Mean
   D. Weighted Mean
   E. Mode

8. Which of the following is not based on all the observations ?

   A. Arithmetic Mean
   B. Geometric Mean
   C. Harmonic Mean
   D. Weighted Mean
   E. Mode

9. Which one of the following measurement does not divide a set of observations into equal parts ?

   A. Quartiles
   B. Standard Deviations
   C. Percentiles
   D. Deciles
   E. Median

10. ______________is based on all observations of data?

    A. Median
    B. Mode
    C. Mean
    D. None of these