Consider the following frequency table of scores:

What is the frequency of score $9$ ?

4

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5

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3

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2

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Solution

The correct option is B $5$
We know, in tally mark representation, numbers are denoted by lines.

Hence, for score $9$ , the frequency is $5$ .
So, option (b) is the correct option.

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1,	5,	2,	4,	3,	6,	1,	4,	2,	5,	1,	6,	2,
6,	3,	5,	4,	1,	3,	2,	3,	6,	1,	5,	2,

Prepare a frequency distribution table for the scores given:

42, 22, 55, 18, 50, 10, 33, 29, 17, 29, 29, 27, 34, 15, 40, 42, 40, 41, 35, 27,

44, 31, 38, 19, 54, 55, 38, 19, 20, 30, 42, 59, 15, 19, 27, 23, 40, 32, 28, 51.

Take the class intervals as 10-20, 20-30, 30-40, 40-50, 50-60.

From the frequency distribution table answer the following questions:

(i) What does the frequency corresponding to the class interval 20-30 indicate?

(ii) In which class intervals are the scores 10, 20 and 30 included?

(iii) Find the range of the scores.

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