Question # 1

Mean deviationis always.

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More than S.D.

Equal to S.D.

Less than S.D.

None of these

Which of the following statements is correct.

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Every symmetrical curve is measokurtic

Standard deviation is the mean squared deviations from the mean

The standard deviation of a constant is constant

Teh second moment about zero equals variance.

Waht is the probability that a ball drawn at random from the bag is.

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0.1

0.4

1.0

Cannot be determined from given information

Which of the followingindices satisfies both the time reversal and factor reversal tests.

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Fisher's method

Paasche's method

Laspeyres method

None of these

Index number are called:

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Mathematical barometer

Economic barometer

Statistical barometer

Both A and C

Continuous variable can be measured at.

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Specific points

Integer points

All possibel points

No points

The probabilyt density function p (x) cannot exced.

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zero

One

Mean

Infinity

A binomial random variable can assume the values

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1,2......n

0,1,2......00

0,1,2......n

2,4,6,8,10

A non-orderly arrangement of things is called

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Combination

Permutation

Collection

Sample Space

The letter used as a symbol for population mean is

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μ_-

Φ

x

σ

A graph of cumulative frequency is called:

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Histogeram

Frequency polygon

Ogive

Frequency curve

Which ofthe following methods uses quantities consumed in the current period when computing a weighted index.

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Laspeyres method

Marshall -Edge worth's methods

Peasche's method

Fisher's method

If we connect the mid points of rectangles in a histogram with a series of lines. we get.

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Ogive

Frequency Polygon

Frequency Curve

Bar chart

Data which have been arranged in ascending or descending order are called.

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Raw data

Grouped data

Arrayed data

Un grouped data

It is the reciprocal of the simple average of teh reciprocal of all the values.

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A.M

G.M

H.M

Mode

Classification of data by quantitative characteristcs is called.

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Qualitative classification

Quantitative classificaton

Geographical classification

Temporal classification

Statistical laws are true.

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On the average

Always

A and C

In the long run

Theoretically best average used in the construction of composite index in

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The arithmetic mean

The geometric mean

The median

The harmonic mean

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