1081. The mean deviation is minimum when deviations are taken from____________
A. Mean
B. Mode
C. Median
D. Zero
✅ The correct answer is option D.
UPSC
1082. 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.
1083. The standard deviation is independent of_____________
A. Change of origin
B. Change of scale of measurement
C. Change of origin and scale of measurement
D. Difficult to tell
✅ The correct answer is option B.
1084. 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.
1085. The variance is zero only if all observations are the___________
A. Different
B. Square
C. Square root
D. Same
✅ The correct answer is option D.
1086. 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.
1087. The positive square root of the mean of the squares of the deviations of observations from their mean is called____________
A. Variance
B. Range
C. Standard deviation
D. Coefficient of variation
✅ The correct answer is option D.
1088. Half of the difference between upper and lower quartiles is called___________
A. Interquartile range
B. Quartile deviation
C. Mean deviation
D. Standard deviation
✅ The correct answer is option C.
1089. The standard deviation one distribution divided by the mean of the distribution and expressing in percentage is called_____________
A. Coefficient of Standard deviation
B. Coefficient of skewness
C. Coefficient of quartile deviation
D. Coefficient of variation
✅ The correct answer is option A.
1090. If the maximum value in a series is 25 and its range is 15, the maximum value of the series is___________
A. 10
B. 15
C. 25
D. 35
✅ The correct answer is option B.