Question # 1

Co-efficent of standard deviation can be measured by the following formula

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test2

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3

4

2

Which is a poor measure of dispersion in open-end distribution.

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Range

Standard deviation

Variance

A.M

The number of ways in which a person enters by oe door and leaves by a different door in a room with three doors is.

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6

9

5

None of these

A set representing all possible out comes of a random experiment is called

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Sample space

Universal set

Simple event

Random experiment

Var (3x+2)

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3Var(x) + 2

9Var(x) +2

Var (x) + 0

3Var (X)

If in binomial distribution, μ = 6, p = 3/5, the number of trial are:

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18

30

10

None of these

A person can choose a tie and a suit form 3 suits ad 5 ties in

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8 ways

15 ways

30 ways

None of these

If one event is unaffected by the outcome of another event, the two events are said to be

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Dependent

Independent

Mutually exclusive

Both b and c

P (A/B) can be evaluated by formula

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P(A∩B)/P(B)

P(A∪B). P(B)

(A∪B)/P(B)

P(A∩B)/P(A)

In how many ways a team of 4 players be chosen from a total 10 persons.

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40

210

5040

None of these

A collection of some of the elements from a group is called.

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Census

Population

Registration

Sample

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

Graphs of frequency distributions are used because.

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they have a long history in practical applications

They attract attenstion to data pattern

They account for biased or incomplete data

None of thses

A coin and die can be thrown together in

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2 ways

12 ways

8 ways

None of these

probability distribution of a continuous random variable can be presented by.

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Formula

Curve

Tabular form

None of these

The most popular measure of dispersion in industry and meteorology is.

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Range

Quartile deviation

Mean deviation

Standard deviation

The variance of 5,5,5,5,5 is.

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0

25

5

125

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