1091. The value of standard deviation changes by a change of__________
A. Origin
B. Scale
C. Algebraic signs
D. None
✅ The correct answer is option D.
UPSC
1092. If the dispersion is small, the standard deviation is____________
A. Large
B. Zero
C. Small
D. Negative
✅ The correct answer is option C.
1093. Which of the following is a unit free quantity___________
A. Range
B. Standard deviation
C. Coefficient of variation
D. Arithmetic mean
✅ The correct answer is option D.
1094. Which measure of dispersion has a different unit other than the unit of measurement of values________
A. Range
B. Standard deviation
C. Variance
D. Mean deviation
✅ The correct answer is option B.
1095. Which of the following measures of dispersion is expressed in the same units as the units of observation?__________
A. Variance
B. Standard deviation
C. Coefficient of variation
D. Coefficient of standard deviation
✅ The correct answer is option C.
1096. 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.
1097. 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.
1098. 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.
1099. If there are many extreme scores on all examination, the dispersion is____________
A. Large
B. Small
C. Normal
D. Symmetric
✅ The correct answer is option A.
1100. If all the scores on examination cluster around the mean, the dispersion is said to be________
A. Small
B. Large
C. Normal
D. Symmetrical
✅ The correct answer is option A.