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How can we construct frequency polygon for varying bin size? For same bin size we do like this : (img)http://s18.postimg.org/8qwu76sd5/Capture.jpg

For varying, how we have to make it? thank you.

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répondre s'il vous plaît. il est très important pour moi! –  Caroline Poulain Mar 10 at 16:26
    
reply please. This question is very necessary –  Caroline Poulain Mar 10 at 16:28
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