Question # 1

If X and Y are independent, than Var ( X -Y) is equal to.

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Var (X) + Var (Y)

Var (X) - Var (Y)

Var (X+ Y)

Zero

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

The probability distribution of discrete random variable is called is

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Frequency distribution

Probability distribution

Probability mass function

Both (a) and (b)

⁴C₅= ....................

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5

1/5

0

None of these

A coin and die can be thrown together in

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2 ways

12 ways

8 ways

None of these

Statistics must be

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Comparable

Not comparable

Qualitative only

NOne of these

P (A/B) can be evaluated by formula

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P(A∩B)/P(B)

P(A∪B). P(B)

(A∪B)/P(B)

P(A∩B)/P(A)

The most popular measure of dispersion in industry and meteorology is.

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Range

Quartile deviation

Mean deviation

Standard deviation

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

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1/2

1/4

3/4

1.0

The distribution is positively skewed if.

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Mean < Mode

Mean > Mode

Mean > Median

Both b and c

Commodities subject to considerable price variation should be best measured by

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Quantity index

Price index

Value index

None of these

Which of the following is an example of compressed data.

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Array

Frequency distribution

Ogive

Histogram

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

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two

Four

five

Three

Which of the following statements is true.

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As a rule statisticians genereally use between 6 and 15 classes.

As a rule, statisticians regards a frequency distribution incomplete if it has fewer than 20 classes.

Classes describe only one characteristics the data ebign organized

None of these

Data in the population Census Reports are.

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Ungrooped data

Secondary data

Primary data

Arrayed data

For a certain distribution if Σ(x -10) = 5, Σ(x -20) =18 & Σ(x -15) = 0 then the value of Σ is.

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10

15

20

25

Base yar weighted index number are.

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Laspeyre's

Paasche's

Fisher's

C.P.I

Range can be calculated in open-end classes.

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Never

Always

Often

Seldom

More Classes

Other Links

Statistics Ics Part 1 Online Test MCQs With Answers

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