Measures of Dispersion Test

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Measures of Dispersion Test - 26

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Weekly Quiz Competition

Question 1
1 / -0

If a constant value $$40$$ is subtracted from each observation of a set, the mean of the set is __________.

A
increased by $$40$$

B
decreased by $$40$$

C
is not affected

D
zero
Question 2
1 / -0

Which measure is based on only the central fifty percent of the observations?

A
Standard deviation

B
Quartile deviation

C
Mean deviation

D
All of above
Question 3
1 / -0

An index is at 100 in 1991. It rises 5% in 1992, falls 6% in 1993,falls 5% in 1994, rises 4% in 1995 and 7% in 1996.The index numbers for all these years with 1991 as base are _______.

A
100, 105, 94, 105, 95, 107

B
100, 105, 94, 105, 107, 95

C
100, 105, 94, 107, 95, 94

D
100, 105, 94, 95, 104, 107
Question 4
1 / -0

If each value of a series is multiplied by $$7$$, the median of the coded value is _______.

A
not affected

B
$$7$$ times the original median value

C
$$(1/7)th$$ times the original median value

D
increased by $$7$$
Question 5
1 / -0

The standard deviation is usually denoted by Greek letter.

A
$$\infty$$

B
$$\not {c}$$

C
$$\sigma$$

D
$$\mu$$
Question 6
1 / -0

Which of the following represents median?

A
First quartile

B
Fiftieth percentile

C
Sixth decile

D
None of the above
Question 7
1 / -0

If each observation of a set is multiplied by $$5$$, the mean of the new setoff observations ______.

A
remains the same

B
is $$5$$ times the original mean

C
is $$(1/5)$$ times the original mean

D
is increased by $$5$$
Question 8
1 / -0

Which one is an absolute measure of dispersion?

A
Range

B
Mean Deviation

C
Standard Deviation

D
All of above
Question 9
1 / -0

The mode of the following observations is $$10, 19, 22, 16, 15, 18, 20, 18, 14, 18, 23$$

A
$$17.55$$

B
$$18$$

C
$$15$$

D
$$16.5$$
Question 10
1 / -0

If the A.M of a set of observations is $$9$$ and its G.M is $$6$$. Then the H.M of the set of observations is ____.

A
$$4$$

B
$$6$$

C
$$3$$

D
None of them

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Measures of Dispersion Test - 26

Result

Measures of Dispersion Test - 26

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SHARING IS CARING

Question 1

increased by $$40$$

decreased by $$40$$

is not affected

zero

Question 2

Standard deviation

Quartile deviation

Mean deviation

All of above

Question 3

100, 105, 94, 105, 95, 107

100, 105, 94, 105, 107, 95

100, 105, 94, 107, 95, 94

100, 105, 94, 95, 104, 107

Question 4

not affected

$$7$$ times the original median value

$$(1/7)th$$ times the original median value

increased by $$7$$

Question 5

$$\infty$$

$$\not {c}$$

$$\sigma$$

$$\mu$$

Question 6

First quartile

Fiftieth percentile

Sixth decile

None of the above

Question 7

remains the same

is $$5$$ times the original mean

is $$(1/5)$$ times the original mean

is increased by $$5$$

Question 8

Range

Mean Deviation

Standard Deviation

All of above

Question 9

$$17.55$$

$$18$$

$$15$$

$$16.5$$

Question 10

$$4$$

$$6$$

$$3$$

None of them

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