The median for the following frequency distribution is : `{:(x_(i) ' :',1,2,3,4,5,6,7,8,9),(f_(i)'

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The median for the following frequency distribution is : `{:(x_(i) " :",1,2,3,4,5,6,7,8,9),(f_(i)" :",8,10,11,16,20,25,15,9,6):}`
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