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in Mathematics by (54.1k points)

Draw a cumulative frequency curve (ogive) for each of the following distributions:

(i)

Class Interval 10 – 15 15 – 20 20 – 25 25 – 30 30 – 35 35 – 40
Frequency 10 15 17 12 10 08

(ii)

Class Interval 10 – 19 20 – 29 30 – 39 40 – 49 50 – 59
Frequency 23 16 15 20 12

1 Answer

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Best answer

Steps of construction:

(a) Taking suitable scales, mark class intervals on x-axis and frequency on y-axis.

(b) Construct rectangles with class intervals as bases and corresponding frequencies as heights.

(c) Join the mid-points of the rectangle to obtain the ogive.

Steps of construction:

(a) Convert the data into exclusive form.

(b) Taking suitable scales, mark class intervals on x-axis and frequency on y-axis.

(c) Construct rectangles with class intervals as bases and corresponding frequencies as heights.

(d) Join the mid-points of the rectangle to obtain the ogive.

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