Question # 1

The most commonly used mathematical method for measuring trend is

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Moving average method

Semi-average method

Method of least squares

Free- hand curve method

If for a contingency table d.f = 12 and the no of rows = 4 then the no of columns will be

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5

4

3

2

The data which have already been collected by someone are called

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Secondary data

Primary data

Arrayed data

None of these

A hypothesis in which all parameters are specified is called

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Composite hypothesis

Null hypothesis

Simple hypothesis

All

Accepting H_o when H_o is true is a:

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Type I error

Type II error

Correct decision

None of these

A perfect positive correlation is signified by

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0

-1

+1

-1 to +1

Sum of deviation from Mean is always

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Negative

Positive

Zero

Fractional

The mean of the standard normal distribution is

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0

1

100

Sum of the random errors is equal to:

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3

2

1

0

Var (ax + b ) is:

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a² var (x) + b

a var (x) - a²

a² var (x)

Zero

Is a normal distribution μ = 10 and σ² = 25 the mode is

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5

10

25

100

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NAT I General Science Statistics MCQs With Answers

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