Question # 1

The Area of trapezoid is equal to:

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sum of paralled sides x base

sum of paralled sides x base/2

2 x base x sum of paralled side

Sum of paralled sides x base/4

Where 'a' is any constant.

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a₁ +a₂+ a₃ +................

na

n₁x₁ + a₂x₂ +..............

Σna

The binomial distribution is symmetrical if

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p = 1/2

P > 1/2

p < 1/3

P ≠ q

Life of a T.V. tube is a.

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Discrete variable

Continuous varaible

Constant

Qualitative variable

Coding method is used for calculation of the.

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Median

Mode

Mean

Weighted mean

An expected value of a random variable is equal to its.

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Variance

B.D.

Mean

Co - Variance

First hand collected data are called:

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secondary

Primary

Constant

Discrete

In pie diagram, the sector of a circle is obtained by.

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Component part / total x 300

Component part / total x 180

Component part / total x 360

None of these

The number of possible outcomes in Bernoulli trial is

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Three

Four

Two

One

If X = 0,2,2,4,8,10, then G.M is.

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4

8

10

zero

Why are the outcomes of a coin tossing mutually exclusive.

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The outcome of any toss is not affected by teh outcome of those preceding it.

Both a head and a tail cannot turn up on any one toss

The probability of getting a head and the probability of getting a tail is the same.

All of these

the standard deviation is independent of.

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Change of origin

Change of scale of measurement

Change origin and scale of meaturement

None of these

Which of the followingindices satisfies both the time reversal and factor reversal tests.

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Fisher's method

Paasche's method

Laspeyres method

None of these

For symmetrical distribution mega 3 is.

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zero

1

2

3

Which is the followig measures cannot be calculated for the numbers 5,8, 12,6, 9, 13, 10

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Median

Mean

Mode

None of these

The bionomial distribution is negatively skewed if.

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p < 1/2

p = 1/2

p > 1/2

p = 1

"P_r can be solved by the formula.

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N!/ r!(n-r)!

(n-r)!/r!

n!(n-r!)

n!(n-r)!/r!

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