Question # 1

A lettter is chosen at random from the word STATITICS , The probability of getting a vowel is.

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1/5

3/10

1/2

2/5

When three coins are tossed simulatneously, P(3 heads) is.

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3/8

1/2

1/8

1/4

The probability of drawan any one spade card is.

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1/32

1/18

1/4

4/13

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

Var (B/aX) =?

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1/aVar(X)

b²/a² Var(X)

b²/a Var(X)

None of these

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

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Joint probability

Conditional probability

Marginal probability

Subjective probability

The sum of probabilities of events of a sample space is always.

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Equal

Discrete

Continuous

Always greater then oen

F(-∞) is always equal to.

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Zero

One

Two

Negative one

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

Random variable is also called ___________.

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Chance stochasitc

Coverges

Random

None of these

Is the tossing of two perfect coins the probability at least one head occur is.

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1/4

1

1/2

3/4

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

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An experiment

An event

A probability

A trail

The coins are tossed, the porbability of two tails is euql to.

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1/2

1/4

3/4

1

For a constant k, the variance of k is

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zero

k²

k

none of these

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

The Area of trapezoid is equal to:

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sum of paralled sides x base

sum of paralled sides x base/2

2 x base x sum of paralled side

Sum of paralled sides x base/4

Tossing two dice possble sampes are.

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2

6

12

36

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4/10

2/10

1/10

0

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Statistics Ics Part 1 Chapter 7 Online Test MCQs With Answers

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