Question # 1

Graph of time series is called

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Sector diagram

Ogive

Historigram

None of these

The difference between the expected value of a statistic and the true value of the parameter being estimated is called

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Accuracy

Error

Precision

Bias

Computer memory

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Performs all calculations

Receives input data

is extremely limited

is better than human memory

The _______ is an irregular component of variation in a time series

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Signal

Noise

Response

None of these

A set containing only one element is called

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Disjoint set

Singleton set

Universal set

Proper set

Statistical laws are true

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On the average

In each case

In long run

None of these

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.M is _______ affected by extreme values

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Not

Highly

Less

None of these

In tabulation, column captions are also called

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Box-head

Body

Stub

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

Rejecting a null hypothesis, when it is true, is called

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Row scale

Simple hypothesis

Type 1 error

Type 2 error

Which of the following would likely be a seasonal component of a time series

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Holidays

Population growth

Law suits

None of these

Lack of symmetry is called

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Dispersion

Moment

Skewness

Kurtosis

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

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Variable

Population

Dichotomy

Frequency distribution

The co-efficient of variation is also called

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Mean deviation

Quartile deviation

Standard deviation

Relative deviation

_______ is the chance variation in an observation.

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Random error

Mean

Deviation

Discrete Varibale

The hypergeometric model is applied when samples are taken or selections are made, from a finite population

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With replacement

Without replacement

With parameters

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

The Classes Aβ,αB, etc. are called

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Positive classes

Negative classes

Negative of A and B

Contrary classes

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

The most common measures of absolute variability are also called

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Range

Measures of spread

Relative measures

Mean deviation

If r between the lines of regressions of x and y and y on x, is +1, then

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Lines coincides

Lines are perpendicular

There is perfect correlation between x and y

A, B and C

G.M becomes zero if any of the observation is

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zero

1

similar

Opposite

A set od data depending on the time is called

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Historigram

Histogram

Time series

None of these

A sample is a representative part of a

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Continuous

Discrete

Population

Parameter

The number used to describe classes in a frequency distribution are called

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Class limits

Relative frequency

Cumulative frequency

Width of class

In the study of two attributes, (B) =

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(Aβ) + (αB)

(AB) + (Aβ)

(B) + (β)

(AB) + (αβ)

When choosing an estimator of a population parameter, one should consider

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Sufficiently

Efficiency

Option A & B

None of these

The total area under normal curve is

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Infinity

unity

zero

greater than one

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

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