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NAT I General Science Statistics MCQs With Answers
Question # 1
The most commonly used mathematical method for measuring trend is
Choose an answer
Moving average method
Semi-average method
Method of least squares
Free- hand curve method
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Question # 2
Var (2x + 3) is:
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5 var (x)
4 Var (x)
4 Var (x) +3
4 Var (x) +9
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Question # 3
The index numbers calculated by considering the relative importance of variables are called:
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Un-weighted
Weighted
Simple
None
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Question # 4
In Mesokurtic distribustion
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m
4
< 3s
4
m
4
= 3s
4
m
4
1
3s
4
m
4
> 3s
4
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Question # 5
If y = 5x + 10, then mean deviation of y is
Choose an answer
5 mean deviation (x)
25 mean deviation (x)
5 mean deviation (x) + 10
None of them
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Question # 6
Variance of b,b,b,b is:
Choose an answer
b
4b
Zero
None of these
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Question # 7
If the two variables are uncorrelated then the value of "r" is
Choose an answer
-1
0
F1
Fractional
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Question # 8
If R
xy
= - 0.84 then r
xy
is
Choose an answer
-0.84
0.84
0.42
None of these
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Question # 9
In constructing a Histogram if the class interval size of one class is double than others then freq of that class should be:
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Doubled
Half
Quarter
One
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Question # 10
Bias is
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Cumulative
Decumulative
Decreasing
None of these
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Question # 11
If the null hypothesis is true the probability error is identified by what name
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b
1- b
a
1- a
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