Question # 1

A specific value of an estimator computed from the sample data after the sample has been observed is called

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Point estimate

Statistical Inference

Statistic

Parameter

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

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Weighted

Unweighted

Relative

Composite

A collection of eight bits is called

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Byte

Word

Record

File

Sum of absolute deviations are minimum if computed from

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Mean

Median

Mode

Range

A symmetrical distribution has mean equal to 4. Its mode will be

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Less than 4

Equal to 4

Greater than 4

None of these

A point estimate is a single number that is used to estimate an unknown

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Constant

Parameter

Variable

None of these

The data which have not undergone any statistical treatment are ________ data

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Primary

Secondary

Grouped

None of these

The main function of a computer is

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Data storage

Speed

Data Processing

None of these

Sample mean is a

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Constant

Parameter

Variable

Statistic

_______ is the chance variation in an observation.

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Random error

Mean

Deviation

Discrete Varibale

In normal probability distribution, all odd order moments about mean are

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zero

one

maximum

none of these

The number of tally count for each value is its

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Range

Frequency

Class boundaries

Class mark

A discrete variable is also known as

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Continuous

Discontinuous

Random Variable

Deviation

The probability distribution of a discrete random variable is usually called its probability

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Inverse function

Mass function

Density function

Frequency function

The heights of all the students enrolled at a college in a given year, is an example of

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Infinite population

Finite population

Discrete sampling

None of these

The probability density function of a continuous random variable Y is specified by a

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straight line

Rectangle

Smooth curve

Circle

Mean is highly affected by

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Even values

Odd values

Zero values

Extreme value

The unit of frequency is

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Hertz

Bytes

Mega bytes

None of these

Selecting a representative sample from a given population called

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Finite population

Sampling

Infinite population

None of these

A population consists of unlimited number of elementary units

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Continuous population

Finite population

Infinite population

Mix population

A set od data depending on the time is called

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Historigram

Histogram

Time series

None of these

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

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Parallel

Perpendicular

Coincident

Inclined at 45°to each other

Exponential smoothing requires

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Past values of the time series

Current values of the time series

Both past and current values of the time series

Estimation of a time trend regression

In chain base method, the base period is

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Fixed

Not Fixed

Constant

None of these

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

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8

5

2

1

The positive square root of the variance is refered to as the

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Mean deviation

Quartile deviation

Standard deviation

Range

The purpose of simple linear regression analysis is to

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Replace points on a scatter diagram by a straight line

Measure the degree to which two variables are linearly associated

Predict one variable from another vaiable

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

In data of birth's and death'd and epidemics as a result of advancement in medical sciences, the secular trend is usually

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a downward tendency

zero tendency

an upward tendency

None of these

Which of the following is not a hardware

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Compiler

CPU

Chip

Memory unit

The Classes Aβ,αB, etc. are called

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Positive classes

Negative classes

Negative of A and B

Contrary classes

More Classes

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