Question # 1

If 1- a = 0.90, then value of Z_a-2 is

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1.96

2.575

1.645

2.326

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

In hypergeometric distribution trials are:

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Independent

Dependent

Constant

None of these

Weight of earth is:

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Discrete Variable

Continuous Variable

Qualitative variable

Difficult to tell)

For one-tailed test, when a = 0.05 then value of z is

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1.645

1.96

2.33

2.58

The data obtained from college record is

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Primary data

Secondary data

Raw data

Qualitative data

Rejecting H_o if H_o is true is

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No error

Type-I error

Type-II error

Standard error

For a given set of bivariate data if B_yx = 0.52 and b_xy = -1.02 then r is

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0.73

-0.73

0.00

1.00

In computer studies RAM stands for

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Ready any Memory

Read Actual memory

Random access memory

Reach at memory

In hypergeometric distribution the trials are:

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Independent

Dependent

Both a and b

None of these

How many purpose are served by index numbers?

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2

3

4

5

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NAT I General Science Statistics MCQs With Answers

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