Question # 1

In a Binomial prob.Distn it is impossible to find:

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P (X < 0)

P (X = 0)

P( X > 0)

P(0Σ X Σ n

Basic year weighted index numbers are:

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Laspeyre's

Paasche's

Fisher's

None of these

If E (X) = 1.6 and E (Y) = 0.4, then E (X - Y) =--------------

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1.2

-0.2

2.0

None of these

If var (x) =5, var(y) =10, then var (2x + y) is:

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10

15

30

25

The data obtained from college record is

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Primary data

Secondary data

Raw data

Qualitative data

The hypergeometric distribution has parameters:

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2

3

4

None of these

Standard deviation is calculated from H.M

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Always

Never

Often

None of these

The most suitable average for index numbers is:

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Arithmetic mean

Geometric mean

Harmonic mean

Median

The difference of the true value of parameter and corresponding value of sample is called

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Non-sampling error

Sampling error

Random error

None of these

If R_xy = - 0.84 then r_xy is

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-0.84

0.84

0.42

None of these

If mena = 40, Mode =42, then distribution is:

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+ skew

- skew

Symmetrical

All of these

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NAT I General Science Statistics MCQs With Answers

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