Construct a frequency polygon for the following distribution:
|Class-intervals||0-4||4 - 8||8 - 12||12 - 16||16 - 20||20 - 24|
The frequency polygon is shown in the following figure
(i) Drawing a histogram for the given data.
(ii) Marking the mid-point at the top of each rectangle of the histogram drawn.
(iii) Also, marking mid-point of the immediately lower class-interval and mid-point of the immediately higher class-interval.
(iv) Joining the consecutive mid-points marked by straight lines to obtain the required frequency polygon.
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- Graphical Representation of Data