Question # 1

F(-∞) is always equal to

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Zero

One

Two

Negative one

Which of the following is suitable for discrete probability distribution.

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Frequency polygon

Probability

Ogive

Histogram

If a Vann diagram is drawn for events A and B which are mutually exclusive, which f the folloiwng would always be true of A and B.

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Theire parts of the rectangle will overlap

Their parts fo the rectangle will be equal in area

Their parts of the rectangle will not overlap

None of these

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

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

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Sample point

Sure event

sample event

simple event

The result of no interest of an experiment is called.

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Contstant

even

Failure

Success

If x and y are independent random variables, then E(xy)

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E(xy)

xE(y)

E(x)

E(x)E(y)

When two coins are tossed simultaneously, P (one head ) is.

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1/2

1/4

3/4

1.0

A probability function is _________ function.

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Mathematical

Mathematical expectation

Converges

None of these

If a is a constant then E(a) is equal to

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a

Square of a

Zero

2a

If y =-7x then E(y) = ...............

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E(x)

-7X

-7E(X)

Zero

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

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Joint probability

Conditional probability

Marginal probability

Subjective probability

The probability of an event connot be.

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= 0

> 0

=1

< 0

Why are the outcomes of a coin tossing mutually exclusive.

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The outcome of any toss is not affected by teh outcome of those preceding it.

Both a head and a tail cannot turn up on any one toss

The probability of getting a head and the probability of getting a tail is the same.

All of these

F (+∞) is always equal to:

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0

Two

One

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

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y₁ = y₂

Y₁ > y₂

None of these

For a constant k, the variance of k is

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zero

k²

k

none of these

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Statistics Ics Part 1 Chapter 7 Online Test MCQs With Answers

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