From the frequency distribution of student marks, find the number of students who scored less than 22.5 marks?

$\begin{matrix} C l a s s & 12.5 - 17.5 & 17.5 - 22.5 & 22.5 - 27.5 & 27.5 - 32.5 & 32.5 - 37.5 F r e q u e n c y & 2 & 22 & 19 & 14 & 13 \end{matrix}$

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Solution

The correct option is D
24

2 people have got marks between 12.5 to 17.5. 22 people have got marks between 17.5 and 22.5. The number of people who have got marks less than 22.5 will include both those students who have got marks between 12.5 and 17.5 and those who have got marks between 17.5 and 22.5. This is nothing but 2 + 22 = 24

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Similar questions

The frequency distribution table below shows the marks of students. Find the number of people who obtained marks less than 22.5.

$\begin{matrix} C l a s s & 12.5 - 17.5 & 17.5 - 22.5 & 22.5 - 27.5 & 27.5 - 32.5 & 32.5 - 37.5 F r e q u e n c y & 2 & 22 & 19 & 14 & 13 \end{matrix}$

Q. From the frequency distribution of student marks, find the number of students who scored less than 22.5 marks.

\begin{matrix} C l a s s & 12.5 - 17.5 & 17.5 - 22.5 & 22.5 - 27.5 & 27.5 - 32.5 & 32.5 - 37.5 F r e q u e n c y & 2 & 22 & 19 & 14 & 13 \end{matrix}

From the frequency distribution of student marks, tell what is the number of people whose marks is less than 22.5?

$\begin{matrix} C l a s s & 12.5 - 17.5 & 17.5 - 22.5 & 22.5 - 27.5 & 27.5 - 32.5 & 32.5 - 37.5 F r e q u e n c y & 2 & 22 & 19 & 14 & 13 \end{matrix}$

There are 68 students of 9th standard from model Highschool, Nandpur. They have scored following marks out of 80, in written exam of mathematics.

70, 50, 60, 66, 45, 46, 38, 30, 40, 47, 56, 68, 80, 79, 39, 43, 57, 61, 51, 32, 42, 43, 75, 43, 36, 37, 61, 71, 32, 40, 45, 32, 36, 42, 43, 55, 56, 62, 66, 72, 73, 78, 36, 46, 47, 52, 68, 78, 80, 49, 59, 69, 65, 35, 46, 56, 57, 60, 36, 37, 45, 42, 70, 37, 45, 66, 56, 47

By taking classes 30-40, 40-50, .... prepare the less than type cumulative frequency table

Using the table, answer the following questions :

(i) How many students, have scored marks less than 80 ?

(ii) How many students have scored marks less than 40 ?

(iii) How many students have scored marks less than 60 ?

The marks scored out of 10 by 13 students of a class are given as:
$6, 7, 3, 7, 6, 9, 4, 6, 10, 4, 6, 8, 9$

What is the frequency of students who scored more than 6 marks?

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From the frequency distribution of student marks, find the number of students who scored less than 22.5 marks? Class12.5−17.517.5−22.522.5−27.527.5−32.532.5−37.5Frequency222191413

From the frequency distribution of student marks, find the number of students who scored less than 22.5 marks?

$\begin{matrix} C l a s s & 12.5 - 17.5 & 17.5 - 22.5 & 22.5 - 27.5 & 27.5 - 32.5 & 32.5 - 37.5 F r e q u e n c y & 2 & 22 & 19 & 14 & 13 \end{matrix}$