Question # 1

A four die is rolled three times. the probabiliyt of getting three area is.

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1/4

1/6

1/216

1/27

Life of a T.V. tube is a.

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Discrete variable

Continuous varaible

Constant

Qualitative variable

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

For negatively skewed distribution mean______ median ______mode.

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=

<

>

None to these

Variance of σ² is equal E to (Y²) - _______?

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E (y)

[E(y)]²

E(y²)

None of these

Hourly temperature recorded by Weather Bureau repeaents.

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Discrete data

Continuous data

Secondary datar

Primary data

An index having a wide scope is called:

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Price index number

General purpose index number

Special purpose index number

None of these

The binomial distribution is symmetrical when:

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P > q

p = 1/2

Probability of success & probability of failure are equal

Both (B) and (C)

Statistics is a characteristics calculated from.

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Sample data

Fictitious data

Arrayed data

Population data

The sum of absolute deviations is a minimum if these deviations are taken from the

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Mean

Mode

Median

All of these

Where 'a' is any constant.

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a₁ +a₂+ a₃ +................

na

n₁x₁ + a₂x₂ +..............

Σna

Information recorded in its original form, whether counts or measurements in referred to as.

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Continuous data

Raw data

Discrete data

Arrayed data

In a bionomial, n = 20, p = 3/5, then variance of this distribution is.

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12

60

4.8

0

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The Laspeyres index

The Paasches index

The value index

None of these

For a binomial probability distribution:

n = 10 & the probability of failure (q =0.6), then mean of the distribution is .

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0.6

6.0

10

4

When sample space S is partitioned into some mutually exclusive events such that their union is sample space itself. Then the events are called

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Simple events

Compound events

Equally likely events

Exhaustive events

^AP₃is equal to.

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3!

4!

5!

6!

A coin and die can be thrown together in

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2 ways

12 ways

8 ways

None of these

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