Question # 1

The variance of 4,4,4,4,4 is.

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-4

(4)²

8

0

Third quartile Q₃ =

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P₃₃

D₃

Median

None of these

In a hypergeometric distribution.

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Mean > Variance

Mean < variance

Mean = variance

Mean = Zero

The average of lower and upper class limits is called.

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Class boundary

class frequency

Class mark

Class limit

Random variable is also called ___________.

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Chance stochasitc

Coverges

Random

None of these

Fora a positively skewed distribution.

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Mean > Mode

Mode > Mean

Median > Mean

None of these

The median divides the data into

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Two halves

Four quarters

Single unit

Six parts

The S.D. of 8,8,8,8,8, is.

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8

(8)²

zero

5

A numerical characteristics of a sample is called.

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Parameter

Variable

Sample

Statistics

The fraph of the symmetrical distribution is

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bell shaped

U - shaped

J- shaped

None of these

How many basic types of index numbers.

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2

3

4

5

If x is a random variable with E(x) = 5 then E(3x - 2) =

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0

1

13

All of them

For moderately positively skewed distribution the following relation hold

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Mean > median > mode

Mean=median=mode

Mean < median< mode

None of these

The difference between largest and smallest observation is called

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Interval

Class interval

Range

Difference

The data which have already been collected by some one are called.

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Secondary data

Primary data

Arrayed data

None of these

If 'a' is a constant, then 5/2 a is equal to.

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a1 + a2+ a3+ a4+ a5

a

52

None

The expected value of a discrete random variable is.

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Always an integer

Always one of the values that the random variable can assume

An interal of values

None of these

Both binomial and hypergeometric distribution are.

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Continuous probability distribution

Discrete prbability distributions

Neither continous nor discrete probability distributions.

Bivarieate distributions.

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