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Math Help - frequency distribution

  1. #1
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    frequency distribution

    my question is on part ii , can someone suggest how to do part ii please? thanks.. by the way , i have attached the working for part ifrequency distribution-img_20140611_051051-1-.jpgfrequency distribution-img_20140611_051147-1-.jpgClick image for larger version. 

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  2. #2
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    Re: frequency distribution

    can someone reply please? thanks
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  3. #3
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    Re: frequency distribution

    I don't think you can answer this, as the classes start with 15 and end with 49, not 18 and 35 which you require...
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  4. #4
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    Re: frequency distribution

    possible solution is to draw a cumulative frequency curve and estimate from the graph
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