Question # 1

The sum of the squares of deviation is least form:

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Mean

Mode

Median

Harmonic mean

Variance is always calculated from:

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Mean

Median

Geometric mean

Mode

Statistics must be:

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Comparable

Not comparable

Discrete in nature

Qualitative in nature

How many purpose are served by index numbers?

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2

3

4

5

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

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+ skew

- skew

Symmetrical

All of these

The probability that the confidence interval does not contain the parameter is denoted by:

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a

1- a

b

1- b

In a 2 x 2 contingency table degrees of freedom is:

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4

2

1

8

G.M of three numbers 2,4,8 is:

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2

8

4

3,67

The systematic arrangement of data in the form of rows and columns is called

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Row and column cations

Data array

Classification

Tabulation

The regression coefficient of x on y is:

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Cov (x,y) / Var (x)

Cov (x,y) / Var (y)

Cov (x,y) / S.D (x)

Cov (x,y) / S.D (y)

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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NAT I General Science Statistics MCQs With Answers

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