Question # 1

Which of the following indices has an upward bias.

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Laspeyres' index

Paache's index

Fisher's index

None of these

If x and y are independent random variables, E(xy)

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E(XY)

xE(y)

E(XY)

E(X) . E(Y)

As a general rule, when arranging data statisticians tend to use.

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Less than six classes

Between six and fifteen classes

Only fifteen classes

More than twenty classes

If C is a non -random variabe than E (C) is.

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c

0

1

x

The binomial distribution is symmetrical if

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p = 1/2

P > 1/2

p < 1/3

P ≠ q

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

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50

40

30

60

Moment ratios b1 and are.

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Expressed in original unit of the data

Dimensionless quantities

Independent of origin and scale of messurement

Both b and c

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

E(x) = Σxf(x) if it ________ absolutely.

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Equal

Converges

Discrete

None of these

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4/10

2/10

1/10

0

In binomial distribution it is impossible to find

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P(x L)

P(x=0)

P(x > 0)

P(0≤ x≤∞)

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

In binomial distribution, the random variable has a range:

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0,1,2...................n

0,1,2,......+∞

-∞ to +∞

∞ to +0

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

Tabulation means, the process of arranging the date into.

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Different classes

Rows

Columns

Rows & columns

The mean deviation can never be

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Positive

Negative

Zero

None of these

The index number given by formula Σp_nq_n/Σp_nq_n x100 is:

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Laspeyres index

The paasche's index

The value index

None of these

In binomial experiment successive trials are:

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Dependent

Independent

May be independent or dependent

None of these

More Classes

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