Question

Draw Ogives and find Median: Class : 0-10 10-20 20-30 30-40 40-50 50-60 60-70 Frequency: 2 5 10 6 4 2 1​

Answer 1

Answer

To draw the Ogive or cumulative frequency curve, we need to find out the cumulative frequency.

Class interval 0−10 10−20 20−30 30−40 40−50

Frequency 6 21 16 32 10

Cumulative frequency 6 27 43 75 85

Let us take the scale on X-axis as 1 cm=10 and Y-axis as 1 cm=10 and mark the cumulative frequency against the upper limit of each class interval. Joining these points by a smooth curve, we get ogive or cumulative frequency curve. The curve looks like this.

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