Question # 1

F(y₁) ≤ F(y₂) if

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y₁= y₂

Y₁>y₂

y₁≤y₂

y≥1/2

An index that measures the change for a fixed time period is called.

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Chain base method

Fixed base method

Simple aggregative method

Cost of living method

Weight of students in a class make

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Discrete data

Continuous data

Constant data

Qualitative data

The fraph of the symmetrical distribution is

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bell shaped

U - shaped

J- shaped

None of these

The variance expresses the variability of data in ................ as unit of data.

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Square of unit

Squaare root of unit

Same unit

All of these

Coefficient of variation (C.V) is given below

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Mean /S.D x10

Mean/S.D x 100

S.D/Mean x 100

S.D/ Mean

E(x - μ) is equal to:

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E(x)

zero

μ

X - μ

Which one is not an example of random experiments.

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A coin is tossed and the outcome is either a head or a tail

A six sided aid is rolled

All medical insurance clams received by a company in a given year.

Some one of person will be admitted to a hospital emergency room during any hour.

In binomial distribution trails are

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Independent

Dependent

Both

Discrete

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

E(y-μ) is equal to

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E(y)

μ

zero

y-μ

A constant can assume.

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Only one value

More than one value

Different values

No value at all

The mean deviation of dispersion can be negative.

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Often

Sometimes

Always

Never

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

As the numebr of observations and classes increase, the shape of a frequency polygon.

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Tends to become increasingly asmooth

Tends to become jagged

stays the same

Varies if data become more reliable

The numebr of classes in a frequency distribution is obtained by dividing the range of variable by the.

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Total frequency

Class interval

Relative freqeuncy

Mid -points

If the random variable x denotes the number of heads of when three distinct coins are tossed k the X assumes values.

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0,1,2,3

1,3,3,1

1,2,3

1,1,1,1

The number 5.56500 rounded off to nearest hundredth is.

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5.57

5.56

6.00

5.00

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