Question # 1

In the tossing of two perfect coins to probability at least one head occur is:

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2/2

1/4

3/4

1

If 'c' is a non-random variable then E(c) is:

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Zero

C

Two

None of these

An estimator is a

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Parameter

Constant

Random variable

Statistic

The lack of uniformity is called

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Skewness

Symmetry

Kurtosis

Dispersion

The midpoint of the group 5,5-7,5 is

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6

6,5

7

13

In symmetrical distribution if Q₁ = 4, Q₃ = 12 then median is

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4

16

8

Zero

A binomial random variable can assume only the values

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1,2,3.........n

0,1,2............y

0,1,2...........n

None of these

The range of constant "A" is equal to

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Zero

A

One

None of these

When the values are not of equal importance then we compute

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Simple mean

Weighted

Combined mean

None of these

Rejecting H_o if H_o is true is

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No error

Type-I error

Type-II error

Standard error

E(x) is:

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G.M (x)

H.M (x)

A.M (x)

Mode (x)

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NAT I General Science Statistics MCQs With Answers

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