The following information is regarding marks in English- obtained out of 80 - 2many students obtained marks less than 40 - Class Interval Frequency 0-20 2 20-40 5 40-60 17 60-80 26 Total N -50 A- 2 B- 5C- 17D- 7

The correct option is D 7Less than 40 means we have to nbsp; consider the first two classes, '0 20' and '20 40'. The respective frequencies (number of st ...

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Standard IX

Mathematics

Frequency

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Question

The following information is regarding marks in English, obtained out of 80.
How many students obtained marks less than 40?

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Solution

The correct option is D 7
Less than 40 means we have to consider the first two classes, '0 - 20' and '20 - 40'. The respective frequencies (number of students) are 2 and 5. Therefore the number of students obtained less than 40 is 5 + 2 = 7.

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The following information is regarding marks in English, obtained out of 80. How many students obtained marks less than 40?

The correct option is D 7Less than 40 means we have to consider the first two classes, '0 - 20' and '20 - 40'. The respective frequencies (number of students) are 2 and 5. Therefore the number of students obtained less than 40 is 5 + 2 = 7.

The following information is regarding marks in English, obtained out of 80.
How many students obtained marks less than 40?

The correct option is D 7
Less than 40 means we have to consider the first two classes, '0 - 20' and '20 - 40'. The respective frequencies (number of students) are 2 and 5. Therefore the number of students obtained less than 40 is 5 + 2 = 7.