A. Interquartile range
B. Quartile deviation
C. Mean deviation
D. Standard deviation
✅ The correct answer is option C.
If Q3=20 and Q1=10, the coefficient of quartile deviation is___________
A. 3
B. 1/3
C. 2/3
D. 1
✅ The correct answer is option B.
Which measure of dispersion can be computed in case of openend classes?___________
A. Standard deviation
B. Range
C. Quartile deviation
D. Coefficient of variation
✅ The correct answer is option C.
The sum of absolute deviations is minimum if these deviations are taken from the_____________
A. Mean
B. Mode
C. Median
D. Upper quartile
✅ The correct answer is option C.
The mean deviation is minimum when deviations are taken from____________
A. Mean
B. Mode
C. Median
D. Zero
✅ The correct answer is option D.
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.
The mean deviation of the scores 12, 15, 18 is_____________
A. 6
B. 0
C. 3
D. 2
✅ The correct answer is option B.
Mean deviation computed from a set of data is always____________
A. Negative
B. Equal to standard deviation
C. More than standard deviation
D. Less than standard deviation
✅ The correct answer is option A.
The average of squared deviations from mean is called_____________
A. Mean deviation
B. Variance
C. Standard deviation
D. Coefficient of variation
✅ The correct answer is option B.
The sum of squares of the deviations is minimum, when deviations are taken from__________
A. Mean
B. Mode
C. Median
D. Zero
✅ The correct answer is option C.