Question # 1

The simplest form of the continuous distribution is the

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Discrete uniform distribution

Probability mass function

Density function

Continuous uniform distribution

The first moment about mean is equal to

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Mean

Zero

Median

Mode

A discrete variable is also known as

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Continuous

Discontinuous

Random Variable

Deviation

The collecting of information from a part of the population is called making a

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Census

Complete enumeration

Discrete sampling

None of these

If "a" and "b" are constants, then E(ax + b) =

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a

a E (x)

E (x)

a E (x) + B

A set consisting of all the elements of the sets under consideration is called the

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Universal set

Disjoint set

Overlapping set

Proper set

A set containing only one element is called

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Disjoint set

Singleton set

Universal set

Proper set

Bias is

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Non random error

Option A & C

Cumulative

None of these

Which of the following is not a hardware

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Compiler

CPU

Chip

Memory unit

If a set contains a specific number of elements then it is called

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Finite set

Infinite set

Universal set

Disjoint set

A sample is a representative part of a

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Continuous

Discrete

Population

Parameter

1 GHz equals to

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1024 Hz

10⁴MHz

10²MHz

1024 MHz

The total area under normal curve is

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Infinity

unity

zero

greater than one

Computer memory

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Performs all calculations

Receives input data

is extremely limited

is better than human memory

A null hypothesis is always one of status quo or

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effected

having some difference

having alternative

no difference

If the sum of the product of deviations of x and y series from their means is zero, the correlation coefficient will be

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1

-1

0

None of these

A set od data depending on the time is called

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Historigram

Histogram

Time series

None of these

For a particular test, alpha = 0.05 and beta = 0.10. The power of this test is

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0.15

0.90

0.85

0.95

The most common measures of absolute variability are also called

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Range

Measures of spread

Relative measures

Mean deviation

The heading for different columns are called

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Stubs

Source notes

Columns captions

Footnotes

The weighted price index is sometimes referred to as the

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Simple price

Composite index

Multi index

None of these

Data are classified according to one characteristic, called

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One-way classification

Tabulation

Single classification

Documentation

Indices that involve a group of commodities are referred to as

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Simple indices

Common indices

Aggregate indices

Relative indices

A time series of annual data can contain which of the following components

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Secular Trend

Cyclical fluctuation

Seasonal variation

(A) and (B) only

The point in time at which the selected number was measured is referred to as the

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Index number

Base period

Relative price

Weighted Index

The branch of statistics concerned with using probability concepts to deal with uncertainty in decision making is called

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Estimation

Statistical Inference

Point estimate

None of these

The area under the probability density function is

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1

0

Minimum

None of these

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