Question # 1

In a skewed distribution the three averages man, median & mode are.

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identical

different

0

equal 1

In which distribution the successive trials are with replacement

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Hypergeometric

Binomial distribution

Continuous distribution

Discrete distribution

Important bases of classification are.

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Two

Three

Four

More than four

In a binomial expreiment with three trials, the variable can take.

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2 Values

3 Values

4 Values

5 Values

The sum of squared deviation is minimum, when deviation are taken form

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Mean

Median

Mode

None of these

Var (B/aX) =?

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1/aVar(X)

b²/a² Var(X)

b²/a Var(X)

None of these

P (A/B) can be evaluated by formula

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P(A∩B)/P(B)

P(A∪B). P(B)

(A∪B)/P(B)

P(A∩B)/P(A)

When the base year values are used as weights, the weighted average of relatives price index is the same as.

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the paache's index

The laspeyres index

The unweighted average of relatives price index

None of these

If n is the number of elements of a set. the total numebr of subsects of this set in

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2n

n2

2ⁿ

n

The probability of success ------------ from one trial to another when trials are dependent

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Remains constant

Is changed

One

Zero

F (+∞) is always equal to:

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0

Two

One

None of these

A graph of cumulative frequency is called:

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Histogeram

Frequency polygon

Ogive

Frequency curve

The hypergeometric distribution has -------------- parameters

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One

Two

Three

Four

Σ(Yi +a) = ?

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ΣY + na

aΣYi

aΣY

Σa

A quantitative variable whose value are countable is called.

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Categorical variable

Continuous variable

Discrete variable

None of these

the standard deviation is independent of.

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Change of origin

Change of scale of measurement

Change origin and scale of meaturement

None of these

The properties of discrete probability distribution are:

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Σp (x) = 1 and Σx. (x) = 1

ΣP (x)= 1 and Σx. P

ΣP(x) = 1 and 0 < P(x) ≤ 1

All of these above

Its value cannot be exactly examined.

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Ranodm variable

Fixed varaible

Mathematical variable

Variable

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