Question # 1

The purpose of the sample is to draw inference about:

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statistic

Population

Parameter

Primary

If x is a random variable with E(x) = 5 then E (3x - 2) =

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0

1

13

15

Binomial distribution has parameter

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One

Two

Three

Four

The positive square root of the mean of the squares of deviations of values from their mean is

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Variance

Covariance

Standard deviation

Standard error

If y =-7x then E(y) = ...............

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E(x)

-7X

-7E(X)

Zero

Coding method is used for calculation of the.

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Median

Mode

Mean

Weighted mean

Co-efficent of quartile deviation can be calculated by the following formula

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Range of the ungroup data can be calculate by formula.

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X_m - X_m

X_m - X₀

X₀

X₀ - X_m

Paasche's index is also called

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Consumer price index

Current year price

Simple index

Cost of consumption

In measure of relative dispersion unit of measurement is.

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Changed

Vanishes

Does not vanishes

None of these

The binomial distribution deal with:

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Discrete variable

Continuous variable

None of these

When referring to a curve whose longer tail is to the right, you would call it.

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Symmetrical

Positively skewed

Negatively skewed

None of these

Which is the impossible event when a dice is rolled.

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5 or 6

6 or 7

2 or 3

1

The types of dispersion are.

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2

3

4

5

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

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Mean

Geometric mean

Harmonic mean

Weighted mean

Which is the followig measures cannot be calculated for the numbers 5,8, 12,6, 9, 13, 10

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Median

Mean

Mode

None of these

Which measure of disperesion is considered as the best genereal purpose measure of dispersion.

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Range

Semi interquartile range

Standard deviation

Mean deviation

The number 5.0435001 rounded off to nearest thousandth is.

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5.043

5.044

5.050

5.000

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