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1cm is 1 block.
So, take 1cm=class intervals (given in the table)
on x-axis.
And 1 cm=5units on y-axis.
Remember when the class interval does not start with 0 we make a zig-zak as given above and star writing intervals.
Also remember that if interval starts with 0 than frequency polygon will start from 0 else from the zig-zag. To draw the frequency polygon take the center of every scale as shown.
So, take 1cm=class intervals (given in the table)
on x-axis.
And 1 cm=5units on y-axis.
Remember when the class interval does not start with 0 we make a zig-zak as given above and star writing intervals.
Also remember that if interval starts with 0 than frequency polygon will start from 0 else from the zig-zag. To draw the frequency polygon take the center of every scale as shown.
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