Question # 1

Continuous data are differentitated from discrete data in that

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Discrete data classes are represnted by fractions

Continuous data classes may be represented by fractions

Continous data take on only whole numebrs

Discrete data can take on any real number

A hypergometric random variable is a (an)

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Independent variable

Continuous random variable

Discrete random variable

None of these

Which of the following is true for binomial distribution

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Mean > variance

Mean < variance

Mean = variance

Mean + standard deviation

Laspeyres index number is also called as:

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Base year weight index number

Current year weight index number

Ideal index number

Fisher index number

The volume or quantity of goods are compared by

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Price index numbers

Relative index numbers

Volume index numbers

Paasche's index

A binomial random variable can assume the values

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1,2......n

0,1,2......00

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

2,4,6,8,10

An experiment which produced different outcomes even if it is repeated a large number of times, under similar conditions is called

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Event

Compound event

Random experiment

None of these

If p = q = 1/2 then distribution is called.

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Postively

Skewed

Symmetrical

Negatively

For negatively skewed distribution mean______ median ______mode.

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=

<

>

None to these

Quartile Co-efficient of skewness is also called as

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Median co-efficent of skewness

Pearson's 1st co-efficient of skewness

Pearson's 2nd co-efficient of skewness

None of these

⁴C₅= ....................

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5

1/5

0

None of these

The mean of the first n natural numbers is.

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n(n+1)2

(n+1)/2

(n-1)/2

n/2

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

In binomial distribution, the random variable has a range:

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

0,1,2,......+∞

-∞ to +∞

∞ to +0

For an open and distribution, without assuming certain limits it is not possible to find:

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A.M

G.M

Median

Boat A and B

50^th percentile is also called as

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Mean

Mode

Average

Median

The process of systematic arrangement of data into rows and columns is called.

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Classification

Tabulation

Bar chart

Pie chart

If X and Y are independent random variables , the E (XY) is equal to.

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E(XY)

E(X) E(Y)

XE(Y)

YE(X)

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