Question # 1

Coefficient of variation (C.V) is given below

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Mean /S.D x10

Mean/S.D x 100

S.D/Mean x 100

S.D/ Mean

The simple probability of occurrence of an event in called the.

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Joint probability

Conditional probability

Marginal probability

Subjective probability

For discrete random variable 'X' the expectation of X I-e E(x) is equal to:

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Σp(x)

Σxp(x)

Σx²p(x)

One

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

The probability of getting one red ball from a bag constaining 4 red, 3 white and 3 black balls is.

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3/10

1/5

2/5

1/2

When two dice are rolled, the maximum totla on the two faces of dice will be.

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2

6

12

36

Variance σ²is equal to E(y²) - --------------------

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E(y)

[E(y)]²

E(y)²

E² (y)

The simplest form of the continuous distribution is the.

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Skewed distribution

Kurtic distribution

Binomial distribution

Uniform distribution

the collection of all possible outcome of a random experimnet is called.

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Sample point

Sure event

sample event

simple event

Hourly temperature recorded by weather brave is the example of:

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Discrete variable

Continuous variable

Qualitative

Both A and B

F (+∞) is always equal to:

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0

Two

One

None of these

If the random variable x denotes the number of heads of when three distinct coins are tossed k the X assumes values.

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0,1,2,3

1,3,3,1

1,2,3

1,1,1,1

For two independent random variables, Var(x) = 14 and Var(Y ) = 5, then var (X-y) is equal to.

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9

70

19

None of these

a measure of the chance that an uncertain event will occur.

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An experiment

An event

A probability

A trail

E(Y2) -[E(y)]2 is the formula, and to compute.

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Variance of the random variable

Mean of the random variable

Both A and B

None of these

E(X ± Y) =..............

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E(X) + E(Y)

E(X) - E (Y)

E(x) ± E (Y)

None of these

Which one is not an example of random experiments.

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A coin is tossed and the outcome is either a head or a tail

A six sided aid is rolled

All medical insurance clams received by a company in a given year.

Some one of person will be admitted to a hospital emergency room during any hour.

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Statistics Ics Part 1 Chapter 7 Online Test MCQs With Answers

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