The S.D. and variance are ____ of origine?

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 variance of new number is_____________?

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

3. 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

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. 1. Nos. is a ____ for measuring changes in a variable or a group of related variables?

   A. variable
   B. Region of goods
   C. Device
   D. Cost

7. Mean is relatively ____ measure?

   A. Stable
   B. manipulation
   C. Change
   D. Group

8. The quartile deviation is ____ (S.D.) is normal dist?

   A. .6734
   B. .7879
   C. .6745
   D. .4567

9. Every distribution tends to ____ distribution?

   A. Small
   B. ∞
   C. Large
   D. Finite

10. Area to the right of (z=0) is the area for ____ values of z?

    A. Zero
    B. Negative
    C. Positive
    D. None of these