Statistics Test

Result

Statistics Test - 3

Score
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Rank
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TIME Taken - -

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Weekly Quiz Competition

Question 1

1 / -0

Fill in the blanks with the help of the given table.

(i) The P of a data set is not affected by the extreme values.
(ii) The mean of two middle terms gives the median when the number of observations is Q .
(iii) The difference between the upper class limit and the lower class limit is known as R .
(iv) Mid-value of a class interval is called its S .

	P	Q	R	S
A	mean	odd	class mark	class size
B	mode	even	class size	class size
C	mode	even	class width	class mark
D	median	odd	class mark	class width

A

B

C

D

Solution

(i) The mode/median of a data set is not affected by the extreme values.
(ii) The mean of two middle terms gives the median when the number of observations is even.
(iii) The difference between the upper class limit and the lower class limit is known as class width/class size.
(iv) Mid-value of a class interval is called its class mark.

Question 2
1 / -0

Find the modes of the following data:

63, 1, 5, 71, 63, 5, 85, 90, 1, 71, 56, 71, 90, 1, 5, 8

A
1, 5, 71

B
63, 90, 5

C
90, 1, 5

D
63, 90, 8

Solution

The modes are 5, 1, 71 (as they occur maximum number of times, i.e. three times).
Question 3
1 / -0

The given data shows the distance (in km) between the residence and the work place of each of 20 doctors.

3, 4, 5, 11, 3, 18, 6, 7, 12, 11, 6, 6, 9, 21, 20, 17, 16, 12, 11, 7

The range of the given data is ______.

A
12

B
19

C
18

D
10

Solution

Range of data is defined as the difference between two extreme observations of distribution
Or range = maximum value - minimum value.

In the given data, the maximum value = 21 and the minimum value = 3.
So, range = 21 - 3 = 18