Question # 1

A value calculated from sample is called

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Parameter

Variable

Constant

Statistic

Mean deviation about the median is

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Maximum

Minimum

zero

1

In symmetrical distribution, mean, median and mode are

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Equal

Different

Zero

None of these

A descriptive measure on the sample observation is called

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Statistics

Statistic

Survey

None of these

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 positive square root of the variance is refered to as the

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Mean deviation

Quartile deviation

Standard deviation

Range

The mean of the absolute deviations between the values and their median is called

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Population

Standard deviation

Range

Mean deviation

First-hand collected data is called

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primary data

secondary data

grouped data

ungrouped data

The heading for different rows are called

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Footnotes

Prefatory note

Stub

None of these

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

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Zero

One

Undefined

Negative

A null hypothesis is always one of status quo or

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effected

having some difference

having alternative

no difference

The simplest form of the continuous distribution is the

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Discrete uniform distribution

Probability mass function

Density function

Continuous uniform distribution

A computer can execute

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a flow chart

a program

an algorithm

all of the above

The two regression lines are perpendicular to each other if

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r = 1

r = 0

r = -1

None of these

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

__________ is always greater than or equal to zero

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Range

Standard deviation

Mean deviation

Variance

The main function of a computer is

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Data storage

Speed

Data Processing

None of these

The statement of the alternative hypothesis never contains a(n) ________ sign regarding the specified value of the parameter

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equal

greater than

less than

None of these

Binomial distribution has two

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Variables

Constants

Parameters

None of these

A ___________ is a line or curve that shows the general tendency of a time series.

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Historigram

Seasonal variation

Secular Trend

None of these

The two attributes A and B are independent, if the co-efficient of association

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Equals to one

Equals to zero

Not equals to zero

None of these

An estimator is always is

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Constant

Variable

Parameter

Statistic

Indices that involve a group of commodities are referred to as

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Simple indices

Common indices

Aggregate indices

Relative indices

A set that contains no element is called

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Null set

Singleton set

Zero set

Infinite set

Lack of symmetry is called

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Dispersion

Moment

Skewness

Kurtosis

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

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Accuracy

Error

Precision

Bias

Time series analysis is used to analyze data

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Over different time periods

Across different companies

Across different companies and across different time periods

That are qualitative

Geometric mean of 0, 5, 1, 4, 8 is

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8

5

2

1

The attributes denoted by A, B, ................ are called

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Positive attributes

Negative attributes

Contingency attributes

None of these

The heading for different columns are called

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Stubs

Source notes

Columns captions

Footnotes

Number of instructions processed in one second is called ________ of computer

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Accuracy

Speed

Frequency

None of these

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