Statistical Consideration in Design MCQ - Set 01 - ObjectiveBooks

# Practice Test: Question Set - 01

1. The resultant population is normally distributed,
(A) When populations of two normally distributed random variables are added
(B) When populations of two normally distributed random variables are subtracted
(C) When populations of two normally distributed random variables are multiplied
(D) Any one of above

2. Dispersion of population is
(A) Spread of data or extend to which the observations are scattered
(B) Midpoint of distribution where most of the data cluster
(C) Concentration of data at either low or high end
(D) Distribution with sharp peak

3. Standard deviation is
(A) Square of standard variable
(B) Arithmetic mean
(C) Root mean square deviation from the mean
(D) Deviation from mean in units of standard deviation

4. When population Y with means Î¼Y is subtracted from population X with mean Î¼X, the mean of resultant population is given by,
(A) Î¼X + Î¼Y
(B) Î¼X - Î¼Y
(C) Î¼X Î¼Y
(D) Î¼X/Î¼Y

5. Histogram is
(A) A set of rectangles
(B) A line graph of class frequency plotted against class marks
(C) A bell shaped smooth curve
(D) None of the above

6. The area below normal curve from (Z = -1) to (Z = +1) is
(A) 1
(B) 0.6827
(C) 0.9545
(D) 0.9973

Where, Z is standard variable

7. When two populations with means Î¼X and Î¼Y are added, the mean of resultant population is given by,

(A) Î¼X + Î¼Y
(B) Î¼X - Î¼Y
(C) Î¼X Î¼Y
(D) Î¼X/Î¼Y

8. Frequency polygon is
(A) A set of rectangles
(B) A line graph of class frequency plotted against class marks
(C) A bell shaped smooth curve
(D) None of the above

9. When population X with mean Î¼X, is divided by population Y with mean Î¼Y, the mean of resultant population is given by,
(A) Î¼X + Î¼Y
(B) Î¼X - Î¼Y
(C) Î¼X Î¼Y
(D) Î¼X/Î¼Y

10. Central tendency of population is measured in units of
(A) Standard deviation
(B) Arithmetic mean
(C) Standard variable
(D) Square of standard deviation

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