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CBSE Questions for Class 11 Commerce Economics Measures Of Dispersion Quiz 9 - MCQExams.com

Which of the following measures of dispersion can attain a negative value?
  • Range
  • Mean deviation
  • Standard deviation
  • None of the above
The quartile deviation from the following observations is 
10,18,20,28,15,17,22,25,29,32,34
  • 8
  • 6
  • 10
  • 5
Which of the following is a unit less measure of dispersion?
  • Quartile deviation
  • Mean deviation
  • Coefficient of variation
  • Range
Which one of the given measures of dispersion is considered best?
  • Standard deviation
  • Range
  • Mean deviation
  • Coefficient of variation
The range from the following observations is 
10,18,20,28,15,17,22,25,29,32,34
  • 24
  • 20
  • 30
  • 42
The co-efficient of range from the following observations is 
10,18,20,28,15,17,22,25,29,32,34
  • 0.6
  • 0.5
  • 0.55
  • None of them
Which measure of dispersion is most affected by extreme values?
  • Standard deviation
  • Mean deviation
  • Range
  • Quartile deviation
The measure of the dispersion which ignores signs of the deviations from a central value is _______.
  • range
  • quartile deviation
  • standard deviation
  • mean deviation
If a constant value 15 is subtracted from each observation of a set, the variance is ________.
  • reduced by 15
  • reduced by 225
  • unaltered
  • increased by 225
If each observation of set is divided by 10, the S.D of the new observations is ______.
  • 10 times of S.D of original obs.
  • 1100th
  • Not changed
  • 110th
Which measure of dispersion is least affected by extreme values?
  • Range
  • Mean deviation
  • Standard deviation
  • Quartile deviation
Sum of squares of the deviations is minimum when deviations are taken from ________.
  • mean
  • median
  • mode
  • zero
A set of values is said to be relatively uniform if it has ________.
  • high dispersion
  • zero dispersion
  • little dispersion
  • negative dispersion
Which measure of dispersion ensures highest degree of reliability?
  • Range
  • Mean deviation
  • Standard deviation
  • Quartile deviation
Which measure of dispersion ensures lowest degree of reliability?
  • Range
  • Mean deviation
  • Quartile deviation
  • Standard deviation
Range of a set of values is 60 and maximum value in the series is 80. The minimum value of the series is _______.
  • 140
  • 20
  • 70
  • None of the above
If Q3+Q1=108,Q3Q1=74; then Q.D is _______.
  • 33
  • 3.7
  • 37
  • 0.68
The mean and S.D of 13,13,13,13 are respectively  ______.

  • 0,13
  • 13,13
  • 13,0
  • 0,0
The co-efficient of mean deviation of first five natural numbers is _____.
  • 0.75
  • 0.4
  • 0.5
  • 0.7
Which measure of dispersion has a different unit other than the unit of measurement of values?
  • Range
  • Mean deviation
  • Standard deviation
  • Variance
If the minimum value in a set is 15 and its range is 55, the maximum value of the set is _______.
  • 40
  • 60
  • 80
  • 70
If the value of a set are measured in kgs, the unit of variance will be ______.
  • Kg2
  • Kg
  • Kg3
  • No unit
In distribution 25% of the observations are less than 46 and 25% of the observations are more than 54. The quartile deviation of the distribution is _______.
  • 3
  • 7
  • 4
  • 6
The average of the sum of squares of the deviation about mean is called ________.
  • variance
  • absolute deviation
  • standard deviation
  • mean deviation
Quartile deviation is equal to _______.
  • semi - interquartile range
  • double the interquartile range
  • interquartile range
  • none of the above
The sum of 10 observations is 110 and the sum of squares of observations is 2900, their standard deviation is ______.
  • 13
  • 8
  • 10
  • 9
If each value of a set is divided by a constant 'd', the co-efficient of variation will be ________.
  • more than original value
  • less than original value
  • same as original value
  • none of the above
The C.V of a distribution is 80% and the mean of the distribution is 40, the S.D of the distribution is ________.
  • 33
  • 32
  • 35
  • 0.30
Which measure of dispersion can be calculated in case of open end intervals?
  • Range
  • Standard deviation
  • Quartile deviation
  • Coefficient of variation
If each value of a series is multiplied by 15, the coefficient of variation will be increased by ______.
  • 50%
  • 0%
  • 15%
  • 10%
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