Question # 1

For two independent random variables, Var(x) = 14 and Var(Y ) = 5, then var (X-y) is equal to.

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9

70

19

None of these

The distribution is symmetrical if the moment coefficient of skewense b1 is.

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Negative

Postive

3

0

Geometric mean is a suitable average in ______ method.

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Price index

Chanin bases

Quantity index

Index mean

Base yar weighted index number are.

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Laspeyre's

Paasche's

Fisher's

C.P.I

For positive skewed distribution mean _________ Median __________ Mode.

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=

<

>

None of these

The median of - 3, 0, -5 , is.

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-3

0

-5

Does not exist

The simplest form of the continues distribution is the

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Skewed distribution

Kurtic distribution

Binomial distribution

Uniform distribution

test2

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3

4

2

The result of no interest of an experiment is called.

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Contstant

even

Failure

Success

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4/10

2/10

1/10

0

Variance σ²is equal to E(y²) - --------------------

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E(y)

[E(y)]²

E(y)²

E² (y)

For a binomial probability distribution:

n = 10 & the probability of failure (q =0.6), then mean of the distribution is .

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0.6

6.0

10

4

In which distribution the successive trials are without replacement.

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Hypergometric distribution

Bionomial dristribution

Continuous distribution

None of these

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

The volume or quantity of goods are compared by_______

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Price index number

Volume index number

Quantity

None of these

Binomial distribution is positive skewed when

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p > q

p = q

p < q

p = 1/2

The sum of squares of deviations is a minimum if these deviations are taken from the.

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Mean

Mode

Median

All of these

Hourly temperature recorded by weather brave is the example of:

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Discrete variable

Continuous variable

Qualitative

Both A and B

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