Question

Draw the cumulative frequency curves for the following distribution:

Marks No. of Students
0 – 10 4
10 – 20 8
20 – 30 11
30 – 40 15
40 – 50 12
50 – 60 6
60 – 70 3

From the graph, obtain the median.

12 Mar 2024
Answer :
Word Count : 825

To draw the cumulative frequency curve, we first need to calculate the cumulative frequency for each class interval.

Here's how we can calculate it:

Marks No. of Students Cumulative Frequency
0 – 10 4 4
10 – 20 8 4 + 8 = 12
20 – 30 11 12 + 11 = 23
30 – 40 15 23 + 15 = 38
40 – 50 12 38 + 12 = 50
50 – 60 6 50 + 6 = 56
60 – 70 3 56 + 3 = 59

Now, let's plot these cumulative frequencies on a graph.

     |
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     |               |               |               |               |
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