11th Class Statistics MCQS
Pearsons co-efficient of skewness is positive when distribution is
Positively skewed
Negatively skewed
Symmetrical
Leptokurtic
Fist moment about origin in is always equal
1(One)
Mean
Variance
Zero
The sum of the squares of deviations is the least when measured from.
Mode
Both A and B
Median
A.M
The value of quartile deviation is always
Zero
None of these
Positive
Negative
Mean deviation = S.D
6/5
2/3
4/5
5/6
The variance of constant is always
One
Positive
Zero
Constant
The variance of 4,4,4,4,4 is.
-4
0
(4)2
8
In the grouped data , the range is the difference between.
Two extreme class frequency
Two extreme class limits
Tow extreme class boundaries
None of these
Dimensional
Negative
Dimension less
Positive
If b2 = 3, then the distribution is:
Normal
None of these
leptokurtic
Platykurtic
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