Question # 1

A frequency polygon is clsed figure which is.

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One sided

Two sided

Three sided

Many sided

Departure from symmetry is called.

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Kurtosis

Skewness

Dispersion

None of these

N-K is classified as

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Success

Failures

Parameters

Range

A numerical characteristics of a sample is called.

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Parameter

Variable

Sample

Statistics

The probability of sure event is:

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0

0.5

1

Negative

The types of dispersion are.

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2

3

4

5

The numbered balls are paced in an urn, Numbers 1- 4 are red and numbers 5 -10 are blue. the probability that a ball drawn at random from the run is blue is.

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0.1

0.4

0.6

1.0

Paasche's index is also called

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Consumer price index

Current year price

Simple index

Cost of consumption

Commodities subject to considerable price variation should best be measured by

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Quantity index

Price index

Value index

None of these

In which distribution the successive trials are with replacement

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Hypergeometric

Binomial distribution

Continuous distribution

Discrete distribution

The probability of a continuous random variable at x = a is ---------------

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One

Zero

Between 0 and 1

More than one

In a bionomial, n = 20, p = 3/5, then variance of this distribution is.

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12

60

4.8

0

Countings or enumerations usualy privide.

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Continuous data

Qualitative data

Discrete data

Grouped data

Standard deviation is always calculate form:

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Mean

Median

Mode

All of the above

For a constant k, the variance of k is

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zero

k²

k

none of these

First moment about mean is always equal to.

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Standard deviation

Zero

1

Variance

A coin is tossed 3 times then, then number of sample points in the sample space is:

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2³

3

8

Both A & C

Probability of an impossible event is

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Zero

Negative

Positive

One

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