In the class intervals 10 – 20, 20 – 30, the number 20 is included in ______. - Mathematics

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In the class intervals 10 – 20, 20 – 30, the number 20 is included in ______.

Options

  • 10 – 20

  • 20 – 30

  • Both the intervals 

  • None of these

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Solution

In the class intervals 10 – 20, 20 – 30, the number 20 is included in 20 – 30.

Explanation:

Since, the class interval 10 – 20 is the first interval of frequency distribution and 20 – 30 is the next one but the number 20 is present in both intervals.

We know that, the presence of 20 in the interval 10 – 20 is not fully 100% while in the next interval 20 – 30, presence of it fully 100%.

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Chapter 14: Statistics & Probability - Exercise 14.1 [Page 132]

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NCERT Exemplar Mathematics Class 9
Chapter 14 Statistics & Probability
Exercise 14.1 | Q 7 | Page 132

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