Question # 1

If a distribution has two modes, than it is called.

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Uni- model

Bi - mdoel

Tri-model

Multi model

the discrete probability distributio may be represented by.

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A table

A graph

A mathematical equation

All of these

Primary data are same:

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Group

Ungroup

Random

None of these

As a general rule, when arranging data statisticians tend to use.

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Less than six classes

Between six and fifteen classes

Only fifteen classes

More than twenty classes

If mean = 25 and variance is also 25, then coefficient of variation is

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100%

25%

20%

10%

Both quantities and prices are used in:

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Link relatives

Chain relatives

Average of relatives

Aggregative index number

A non-orderly arrangement of things is called

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Combination

Permutation

Collection

Sample Space

Mean, Median and mode of binomial distribution can be equal if

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P < q < 1/2

P > q < 1/2

P ≠ q

teh most frequent value of the data if it exists is.

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A.M

G.M

Mode

Median

The probability of drawing two acea from apack of 52 cards with replacement is.

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1/169

1/10

1/4

1/256

The frequency of a class divided by total frequency is called.

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Class frequency

Cumulative

Relative freqeuncy

Total frequency

Karl Pearson's 1^st co-efficient of skewness is given by formula

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None of these

The compare the variation of two or more than two sereies, we use.

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Mean absolute deviation

Variance

Coefficient of viariation

Corrected atandard deviation

If x is a continuous random vriable, then the function f (x) is.

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A probability function

A probability denaity function

A density function

Both b and c

Which pair of measures cannot be calculated when one of numbers in the seriesis zero.

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G.M and A.M

G.M and H.M

H.M and A.M

None of these

Which of the following distribution(s) has 3 parameters.

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Binomial distribution

Hypergeometric distribution

Both of the above

None of these

In construction of frequency distribution the first step is:

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To calculate the calss marks

To find range of the

To find the class boundaries

None of these

The sum of the deviation form mean of a set of an value is

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least

0

positive

None of these

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