A. Variance
B. Standard deviation
C. Coefficient of variation
D. Coefficient of standard deviation
✅ The correct answer is option C.
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.
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.
If the dispersion is small, the standard deviation is____________
A. Large
B. Zero
C. Small
D. Negative
✅ The correct answer is option C.
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.
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.
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.
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.
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.
If there are ten values each equal to 10, then standard deviation of these values is___________
A. 100
B. 20
C. 10
D. 0
✅ The correct answer is option C.