Question # 1

The number 5.0435001 rounded off to nearest thousandth is.

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5.043

5.044

5.050

5.000

The parameters of hypergeometric distribution are:

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n,k & p

n, k & q

n, p & q

n, k & N

If x is discrete random variable, then the function f (x) is.

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A probability function

A density function

A probability density function

A distribution function

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

Which of the following is an example of compressed data.

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Array

Frequency distribution

Ogive

Histogram

"P" or "q" can not be greater than

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1

0

2/3

1/2

Major area of statistics today is concerned with drawing conclusion from.

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Complete study

Samples

Populations

Complete universe

the phase of statistics that is concerned with the procedures and methodology for obtaining valid conclusions is called.

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Descriptive staticis

Deductive statistics

Inferential statistics

Sample statistics

Which of the following case is true for hypergeometric distribution.

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Probability remains constant for all trials

Probability changes

successive trials are dependent

Both (B) and (C) but not (A)

In a symmetrical distribution Q₁ = 20, Median = 30 the Q₃ is:

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50

40

30

60

In binomial experiment successive trials are:

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Dependent

Independent

May be independent or dependent

None of these

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

The main advantages of using the range as a measure of dispersion is that.

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It is easy to calculate

It is heavily influenced by extreme values.

It can change drastically from one data set to the next

It is determined by only two points in the data set

The probability of an impossible event is.

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Positive

Zero

Negative

1

Which of the following price indices are prepared by Federal Bureau of Statistics.

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Wholesale price index

Consumer price index

Sensitive price indicator

All 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

A disadvantage of range is that it is based on.

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Absolute deviation

Square deviation

Two extreme observation

Upper and quartile

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.

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