Question # 1

We refer the difference between the sample result and the true value as

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Accuracy

Error

Precision

Bias

A set that contains no element is called

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Null set

Singleton set

Zero set

Infinite set

A sample statistic that is used to estimate the unknown true value of a population parameter is called

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Point estimator

Interval estimator

Testing of hypothesis

None of these

The CPU of a digital computer consists of

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ALU

Main memory

Control unit

All of the above

If all items are given equal weight, the index number is called

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Weighted

Unweighted

Relative

Composite

The process of making tables or arranging data into rows and columns is called

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Classification

Tabulation

Information

Arrangement

Most of the decisions that affect our daily lives are based upon

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Absolute certainty

Likelihood

Independent

None of these

Data are classified according to one characteristic, called

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One-way classification

Tabulation

Single classification

Documentation

A computer can execute

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a flow chart

a program

an algorithm

all of the above

The main function of a computer is

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Data storage

Speed

Data Processing

None of these

An estimator is always is

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Constant

Variable

Parameter

Statistic

The heading for different rows are called

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Footnotes

Prefatory note

Stub

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

A variable whose values depend upon the outcomes of a random experiment is called a

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Constant

Parameter

Random variable

Continuous variable

The process of dividing the objects into two mutually exclusive classes is called

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Variable

Population

Dichotomy

Frequency distribution

The two regression lines are perpendicular to each other if

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r = 1

r = 0

r = -1

None of these

A combination of characters, numbers and symbols for specific purpose is called

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Bytes

Data

MB

None of these

The heading for different columns are called

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Stubs

Source notes

Columns captions

Footnotes

In chain base method, the base period is

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Fixed

Not Fixed

Constant

None of these

In continuous distribution, P(y=a) and P(y= b) is always

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Zero

One

Undefined

Negative

The probability of a type 1 error is

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Alpha

beta

Power curve

None of these

G.M becomes zero if any of the observation is

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zero

1

similar

Opposite

The difference between the upper and the lower class boundaries of a class is called

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Class interval

Class distribution

Frequency

Cumulative frequency

If the correlation coefficient r = 0, the two regression lines are

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Parallel

Perpendicular

Coincident

Inclined at 45°to each other

Mean deviation is always

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Greater than S.D

Less than S.D

Equal to S.D

Negative

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 shape of binomial distribution depends upon the value of its

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Constants

Parameters

Variables

Integers

In the study of two attributes, (B) =

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(Aβ) + (αB)

(AB) + (Aβ)

(B) + (β)

(AB) + (αβ)

A procedure of making judgment about the unknown value of a population parameter by using the sample observation is called

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Statistical Inference

Parameter

Testing of hypothesis

Statistical estimation

The sum of probabilities of a discrete random variable is always

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0

1

Infinity

None of these

A null hypothesis is always one of status quo or

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effected

having some difference

having alternative

no difference

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