Question # 1

If X and Y are random varaibes, than E ( X - Y) is equal to.

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E(X) + E (Y)

E(X) - E(Y)

X - E (Y)

E(X) - Y

A binomial random variable is a (an)

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Constinuous random variable

Discrete random variable

Dependent varaible

Independent variable

In fixed base method, the base period should be.

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Far away

Normal

Un reliable

Abnormal

If X and Y are independent random variables , the E (XY) is equal to.

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E(XY)

E(X) E(Y)

XE(Y)

YE(X)

The consumer price index number is also called.

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The cost of living index number

The retail price index number

The wholsale price index number

Both a and b

Coding method is used for calculation of the.

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Median

Mode

Mean

Weighted mean

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

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

Y₃+y₄+......+y₁₅ =

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Σ¹⁵ _i=1 Y₁

Σ¹⁵ _i=3 Y₂

¹⁵Σ_i=3 Y_i

¹⁵Σ_i=3Y_i²

The grouped data is.

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Primary

Secondary

Raw data

None of them

If the random variable x denotes the number of heads of when three distinct coins are tossed k the X assumes values.

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0,1,2,3

1,3,3,1

1,2,3

1,1,1,1

Mean deviation is always.

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Less then S.D

Equal to S.D

More than S.D

Negative

The hypergeometric experiment has propeties

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One

Three

Four

Five

The weights used in a price index are.

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Percentage of total price

Average of prices

Quantities

None of these

Consumer price indexis obtained by.

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Paache's formula

Marshall Edgeworth formula

Fisher's ideal formula

Family Budget Method formula

Which of the following is an example of compressed data.

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Array

Frequency distribution

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Histogram

In chain base method the base period is.

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Fixed

Changed

Constant

None of these

If the chance of occurance of two events are same then such events are called

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Independent events

Dependent events

Mutually exclusive events

Equally likely events

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Statistics Ics Part 1 Online Test MCQs With Answers

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