Measures of Dispersion Test

Result

Measures of Dispersion Test - 27

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Weekly Quiz Competition

Question 1
1 / -0

The following distribution of ages (in complete years) is obtained for the students of higher secondary.
The median of the distribution is

Age (in years) 15 16 17 18 19 20 21
Number of students 12 18 20 10 7 6 2

A
$$17.11$$

B
$$17$$

C
$$18$$

D
None of them
Question 2
1 / -0

The mean of the following observations is
$$10, 8, -9, -12, 15, 0, 23, -3, -2, 13, -24, 28, 35, 42$$

A
$$4$$

B
$$-2$$

C
$$7$$

D
$$-9.75$$
Question 3
1 / -0

If each observation of a set is divided by $$5$$, then the mean of new values _________.

A
is $$5$$ times the original mean

B
is decreased by $$5$$

C
is $$(1/5)th$$ of the original mean

D
remains the same
Question 4
1 / -0

The A.M of two numbers is $$6.5$$ and their G.M is $$6$$. The two numbers are _____.

A
$$8, 6$$

B
$$8, 5$$

C
$$7, 16$$

D
$$4, 9$$
Question 5
1 / -0

What percentage of value lies between $$5th$$ and $$25th$$ percentiles?

A
$$20\%$$

B
$$30\%$$

C
$$75\%$$

D
None of the above
Question 6
1 / -0

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

A
$$17.55$$

B
$$18$$

C
$$15$$

D
$$20$$
Question 7
1 / -0

If the two observations are 10, their arithmetic mean is _____.

A
$$10$$

B
$$0$$

C
$$5$$

D
None of the above
Question 8
1 / -0

The following distribution of ages (in complete years) is obtained for the students of higher secondary.
The mode of the distribution is.
Age (in years) 15 16 17 18 19 20 21
Number of students 12 18 20 10 7 6 2

A
$$16$$

B
$$17$$

C
$$18$$

D
None of them
Question 9
1 / -0

If the two observations are $$10$$ and $$-10$$, their arithmetic mean is _____.

A
$$10$$

B
$$20$$

C
$$0$$

D
None of the above
Question 10
1 / -0

The $$Q_3$$ for the following distribution is
X 2 3 4 5 6 7 8 9 10 11
Y 3 6 9 18 20 14 10 10 7 2

A
$$6$$

B
$$5$$

C
$$8$$

D
$$9$$

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Re-Attempt Weekly Quiz Competition

Age (in years)	15	16	17	18	19	20	21
Number of students	12	18	20	10	7	6	2

Age (in years)	15	16	17	18	19	20	21
Number of students	12	18	20	10	7	6	2

Measures of Dispersion Test - 27

Result

Measures of Dispersion Test - 27

Score

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Rank

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SHARING IS CARING

Question 1

$$17.11$$

$$17$$

$$18$$

None of them

Question 2

$$4$$

$$-2$$

$$7$$

$$-9.75$$

Question 3

is $$5$$ times the original mean

is decreased by $$5$$

is $$(1/5)th$$ of the original mean

remains the same

Question 4

$$8, 6$$

$$8, 5$$

$$7, 16$$

$$4, 9$$

Question 5

$$20\%$$

$$30\%$$

$$75\%$$

None of the above

Question 6

$$17.55$$

$$18$$

$$15$$

$$20$$

Question 7

$$10$$

$$0$$

$$5$$

None of the above

Question 8

$$16$$

$$17$$

$$18$$

None of them

Question 9

$$10$$

$$20$$

$$0$$

None of the above

Question 10

$$6$$

$$5$$

$$8$$

$$9$$

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