Question # 1

The index numbers are generally classified into ------------- types

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two

Four

five

Three

Fist moment about origin in is always equal

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Mean

Variance

Zero

1(One)

When a pair of dice is rolled, the sum of upperemost dots vary from.

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0 to 10

1 to 11

2 to 19

2 to 12

If a is a constant then E(a) is equal to

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a

Square of a

Zero

2a

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

Proportion is the always _________ equal to 1.

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Less then or

Always greater

Greater then or

Zero

For a constant K ,the variance of K.

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Zero

A^-2

K

None of these

Commodities subject to considerable price variation should best be measured by

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Quantity index

Price index

Value index

None of thes

Standard deviation is always calculate form:

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Mean

Median

Mode

All of the above

Which of the following statements is true of cumulative frequency polygons or ogives for a particular set of data.

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Both less than and or more curves have the same shape

Or more curves slope up and to the right

Less than curve slope down and to the right

Less than curve slope up and to the right

The probability of drawing a king of spade from a pack of 52 cards is.

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1/4

1/13

1/26

1/52

When calculating the average rate of debt growth for a company, the correct mean to use is.

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Arithmetic mean

Weigheted arthmetic

Geometric mean

None of these

Composite inde numebr involves commodities.

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One

Two

Three

More than one

A fair die is rolled three times. The probability of getting three "aces" is

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1/3

1/6

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

For moderately positively skewed distribution the following relation hold

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Mean > median > mode

Mean=median=mode

Mean < median< mode

None of these

Histogramis a graph of.

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Qualitative data

Time sereis

Ogive

Frequency distribution

The mid point of group 5.5 - 7.5 is.

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6

7

7.5

6.5

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