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NAT I General Science Statistics MCQs With Answers
Question # 1
If x - 0,1,2,P(x) = k,2k,3k then k is
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1/4
1/9
1/8
1/6
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Question # 2
The harmonic mean of two numbers a and b is:
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2ab/ a+ b
2 / a +b
ab / a + b
a + b/ ab
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Question # 3
In symmetrical distribution the values of mean median and mode
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Zero
Coincide
Do not coincide
None of these
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Question # 4
The data obtained from college record is
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Primary data
Secondary data
Raw data
Qualitative data
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Question # 5
If 'C' is a non-random variable then E (C) is:
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C
0
1
x
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Question # 6
In a family with two children how many are girls
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0,1
2
0,1,2,3
0,1,2s
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Question # 7
A binomial random variable can only assume the values
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1,2.................n
0, 1, 2.....................................∞
0, 1, 2,,,,,,,,,,,,,,,,,,,,,,,n
2,4,6,8,10
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Question # 8
The formula used to estimate a parameter is called:
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Estimate
Estimation
Bais
Estimator
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Question # 9
E(x) is:
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G.M (x)
H.M (x)
A.M (x)
Mode (x)
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Question # 10
Basic year weighted index numbers are:
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Laspeyre's
Paasche's
Fisher's
None of these
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Question # 11
If critical region is located on both sides it is called
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One tailed test
One sided test
Two tailed test
Not exists
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