Question # 1

A binomial random variable is a (an)

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Constinuous random variable

Discrete random variable

Dependent varaible

Independent variable

The number of terms in the expansion of the binomial (p+q)ⁿ is.

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n

n-1

n+1

2n

Which method of construction of consumer price index number is the laspeye's index number.

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Aggregate expenditure method

Family budget method

Both a and b

None of these

Is the tossing of two perfect coins the probability at least one head occur is.

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1/4

1

1/2

3/4

A frequency polygon is clsed figure which is.

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One sided

Two sided

Three sided

Many sided

The whole issue of descriptive and inferential statistic can be described with the help of.

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Statistical analysis

Statistic

Statistical problem

Statistical steps

When we draw the sample with replacement (the first sample is replaced before the next draw), the probability distribution to be used is:

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Binomial

Hypergeometric

Both Binomial & hypergeometric

None of these

First central moment is always.

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0

1

-1

2

When three coins are tossed simulatneously, P(3 heads) is.

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3/8

1/2

1/8

1/4

Which of the following is written at the bottom of the table:

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Sources note

Foot note

Prefatory note

Both A and B

In hypergometric distribution the trials are.

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Independent

Dependent

Independent and dependent

None of these

Its value cannot be exactly examined.

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Ranodm variable

Fixed varaible

Mathematical variable

Variable

If data is arranged in increasing order of magnitude that data is scald to be arranged in:

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Descending order

Ascending order

Statistic order

Both A and B

For discrete random variable 'X' the expectation of X I-e E(x) is equal to:

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Σp(x)

Σxp(x)

Σx²p(x)

One

The index number are generally classified into ___________ types.

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Two

Four

Five

Three

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

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0

1

13

15

Which one of the following is not effected by extreme values

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mean

median

mode

both (a) and (b)

If the value of a variable are -2, -3, -5, -10 then range is.

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-12

8

-8

0

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