s1 help needed

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    could anyone explain to me how to fill out these blank? How can I find the fre if I only know the width. And what does f x midpt mean? Any reply will be appreciated!


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    could anyone explain to me how to fill out these blank? How can I find the fre if I only know the width. And what does f x midpt mean? Any reply will be appreciated!


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    f is short for frequency, it is just frequency * midpoint as it says. If in doubt, look up how to find the mean when the data is grouped in classes.

    https://www.mathsisfun.com/data/freq...dian-mode.html

    To find frequency for the last one I think you need to use the median (given) to work out what n is and hence..
 
 
 
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