Question # 1

Theoretically best average used in the construction of composite index in

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The arithmetic mean

The geometric mean

The median

The harmonic mean

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 numebr of trial in bionomial distribution is.

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Not fixed

Fixed

Large

Small

Events with equal probabilities are called.

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Mutually exclusive events

Exhauative events

Eqauily likely events

Simple events

If (E(X) = E than find arithmetic means will be.

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1

4

0

8

In a fixed base method which period is taken always 100

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Preceding

Following

Base

Current

In the price relative, the given year price is divided by the _________.

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Base year price

Current year price

Previous year price

None of these

Its value cannot be exactly examined.

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Ranodm variable

Fixed varaible

Mathematical variable

Variable

If an index numebr calculation over 8 years with a base value of 100 gave an index for 1992 of 110, what would be the percentage relative for 1993.

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90.0

13.75

880

110

If Laspeyres index = 104.5, Paasche's index = 107.9, then, Fisher's ideal index is equal to:

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100

104.1

106.2

110.2

The index number are generally classified into ___________ types.

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Two

Four

Five

Three

When two coins are tossed simultaneously, P (one head ) is.

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1/2

1/4

3/4

1.0

if X and Y are independent random varaibesl the S.D. (X-Y) is equal to

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Var (X) - var (Y)

Var (X) + Var (Y)

E(X-Y)2

E(X + Y)2

When X denotes the number of success in binomial experiment, it is called.

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Random variable

Binomial random variable

Continuous random variable

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

Which of the following measures of dispersion is independent of the units employed.

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Standard deviation

Quartile deviation

_{Coefficient of variation}

Variance

For a binomial distribution with n = 5 prob ( X = -2) is.

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0

Greater than zero

Less than zero

None of these

The sum of probabilities of events of a sample space is always.

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Equal

Discrete

Continuous

Always greater then oen

The hyper-geometric distribution has........... parameters.

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1

2

3

4

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