A. 140
B. 143
C. 146
D. 70
✅ The correct answer is option B.
Statistics MCQs
The average of squared deviations about the arithmetic mean for a set of numbers is called___________
A. Standard deviation
B. Coefficient of mean deviation
C. Mean deviation
D. Variance
✅ The correct answer is option D.
In quality control of manufactured items, the most common measure of dispersion is___________
A. Range
B. Average deviation
C. Standard deviation
D. Quartile deviation
✅ The correct answer is option A.
If the difference of the third and first quartiles is divided by the sum of the third and first quartiles then it is known as __________
A. Quartile
B. Coefficient of mean deviation
C. Coefficient of quartile deviation
D. None of the above
✅ The correct answer is option C.
The measure of dispersion which uses only two observations is called__________
A. Range
B. Quartile deviation
C. Mean deviation
D. Standard deviation
✅ The correct answer is option A.
The measure of dispersion which uses only two observations is called___________-
A. Mean
B. Median
C. Range
D. Coefficient of variation
✅ The correct answer is option C.
Which of the following is an absolute measure of dispersion?___________
A. Coefficient of variation
B. Coefficient of dispersion
C. Standard deviation
D. Coefficient of skewness
✅ The correct answer is option C.
Given below the four sets of observations. Which set has the minimum variation?____________
A. 46, 48, 50, 52, 54
B. 30, 40, 50, 60, 70
C. 40, 50, 60, 70, 80
D. 48, 49, 50, 51, 52
✅ The correct answer is option D.
The mean deviation of the scores 12, 15, 18 is_____________
A. 6
B. 0
C. 3
D. 2
✅ The correct answer is option B.
If Y = ax ± b, where a and b are any two numbers but a 0, then M.D(Y) is equal to__________
A. M.D(X)
B. M.D(X) ± b
C. a M.D(X)
D. M.D(Y) + M.D(X)
✅ The correct answer is option D.