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Statistics Ics Part 1 Chapter 4 Online Test MCQs With Answers
Question # 1
Mean deviation is always.
Choose an answer
Less then S.D
Equal to S.D
More than S.D
Negative
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Question # 2
If Q3 = 20 and Q1 = 10 the coefficient of quartile deviation is.
Choose an answer
3
1/3
2/3
1
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Question # 3
Karl Pearson's 1
st
co-efficient of skewness is given by formula
Choose an answer
None of these
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Question # 4
For a moderately skewed dsitribution, whihc of the following emprical formula holds.
Choose an answer
M.D. = 4/5(S.D)
Q.D. = 2/3 (S.D)
Q.D . = 5/6 (M.D.)
All of these
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Question # 5
Second moment about mean is called
Choose an answer
Standard deviation
Mean deviation
Variance
Coefficient of variation
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Question # 6
In a symmetrical distribution the coefficient of skewness is equal to.
Choose an answer
-1
+1
0
None of these
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Question # 7
The positive square root of the mean of the squares of deviations of values from their mean is
Choose an answer
Variance
Covariance
Standard deviation
Standard error
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Question # 8
The mean deviation can never be
Choose an answer
Positive
Negative
Zero
None of these
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Question # 9
Standard deviation is always calculate form:
Choose an answer
Mean
Median
Mode
All of the above
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Question # 10
If the value of a variable are -2, -3, -5, -10 then range is.
Choose an answer
-12
8
-8
0
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Question # 11
The mean of the absolute deviations of observations from mean, median or mode is called
Choose an answer
Quartile deviation
Absolute deviation
Mean
Mean deviation
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Question # 12
The variance expresses the variability of data in ................ as unit of data.
Choose an answer
Square of unit
Squaare root of unit
Same unit
All of these
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Question # 13
The difference between largest and smallest observation is called
Choose an answer
Interval
Class interval
Range
Difference
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