Find the median from the following data.
Marks $0 - 10$ $10 - 30$ $30 - 60$ $60 - 80$ $80 - 90$
No. of students $5$ $15$ $30$ $8$ $2$

10

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20

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30

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40

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Solution

The correct option is D $40$
Since the class intervals are unequal so the question can be solved in following way .
Follow the image. As the median is coming $40$ .
Hence option d is correct.

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Similar questions

Q. Draw a histogram and frequency polygon to represent the following data.

Marks	$10 - 20$	$20 - 30$	$30 - 40$	$40 - 50$	$50 - 60$	$60 - 70$	$70 - 80$	$80 - 90$	$90 - 100$
No. of Students	$12$	$22$	$35$	$40$	$60$	$52$	$40$	$30$	$5$

Compute mean deviation from mean of the following distribution :

$\begin{matrix} Marks & 10 - 20 & 20 - 30 & 30 - 40 & 40 - 50 & 50 - 60 & 60 - 70 & 70 - 80 & 80 - 90 No. of students & 8 & 10 & 15 & 25 & 20 & 18 & 9 & 5 \end{matrix}$

Find the median of the following :

$\begin{matrix} Class Interval & 0 - 10 & 10 - 30 & 30 - 60 & 60 - 80 & 80 - 90 Frequency & 5 & 15 & 25 & 8 & 3 \end{matrix}$

Q. The marks obtained by 40 students of a class are given below :

80, 10, 30, 70, 60, 50, 50, 40, 40, 20, 40, 90, 50, 30, 70, 10, 60, 50, 20, 70, 70, 30, 80, 40, 20, 80,

90, 50, 80, 60, 70, 40, 50, 60, 90, 60, 40, 40, 60

, and

60

How many students obtained marks below

40

Q. The marks obtained by 40 students of a class are given below :

80, 10, 30, 70, 60, 50, 50, 40, 40, 20, 40, 90, 50, 30, 70, 10, 60, 50, 20, 70, 70, 30, 80, 40, 20, 80, 90,

50, 80, 60, 70, 40, 50, 60, 90, 60, 40, 40, 60

, and

60

Construct a frequency distribution table.

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Marks	$0 - 10$	$10 - 30$	$30 - 60$	$60 - 80$	$80 - 90$
No. of students	$5$	$15$	$30$	$8$	$2$

Find the median from the following data.Marks0−1010−3030−6060−8080−90No. of students5153082

The correct option is D 40Since the class intervals are unequal so the question can be solved in following way . Follow the image. As the median is coming 40 .Hence option d is correct.

Find the median from the following data.
Marks $0 - 10$ $10 - 30$ $30 - 60$ $60 - 80$ $80 - 90$
No. of students $5$ $15$ $30$ $8$ $2$

The correct option is D $40$
Since the class intervals are unequal so the question can be solved in following way .
Follow the image. As the median is coming $40$ .
Hence option d is correct.