Question # 1

Composite inde numebr involves commodities.

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One

Two

Three

More than one

When a pair of dice is rolled, the sum of upperemost dots vary from.

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0 to 10

1 to 11

2 to 19

2 to 12

The measures of disperesin are chaged by the change of.

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Origin

Scale

Both a and b

None of these

For a certain distribution if Σ(x -10) = 5, Σ(x -20) =18 & Σ(x -15) = 0 then the value of Σ is.

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10

15

20

25

The letter used as a symbol for population mean is

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μ_-

Φ

x

σ

Consumer price indexis obtained by.

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Paache's formula

Marshall Edgeworth formula

Fisher's ideal formula

Family Budget Method formula

As the numebr of observations and classes increase, the shape of a frequency polygon.

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Tends to become increasingly asmooth

Tends to become jagged

stays the same

Varies if data become more reliable

Subset of sample is called:

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Event

Simple event

Compound event

Experiment

The probabilyt that a continous random varaibe 'x ' takes on specific value of x is.

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Greater thaan zero

Less than zero

Equal to Zero

0 to 1

In binomial each trial has

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One outcome

Two outcomes

Three outcomes

Four outcomes

The conditional probability P(A/B) is given by.

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(A∩B)/(B)

P(A∩B)/P(A)

P(A∩B)/P(B)

(A∩B)/P(B)

The most central value of an arrayed data is.

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Mode

Median

Mean

Harmonic mean

The sum of square of deviations of the observations from their mean is

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Minimum

Maximum

Zero

None of these

The variance of 5,5,5,5,5 is.

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0

25

5

125

An arrangement of data to show the frequency of occurrence is called.

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Freqeuncy distribution

Probability distribution

Data array

Cumulative distribution

The median of - 3, 0, -5 , is.

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-3

0

-5

Does not exist

Which is appropriate averege for finding the average speed of a journey.

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Mean

Geometric mean

Harmonic mean

Weighted mean

The numbered balls are paced in an urn, Numbers 1- 4 are red and numbers 5 -10 are blue. the probability that a ball drawn at random from the run is blue is.

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0.1

0.4

0.6

1.0

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