If the mean of the following frequency distribution is 5, then b =   `{:(x_(i) "  :",3,5,7,4),(f_
Channel: Doubtnut
Date: 2020-05-17

If the mean of the following frequency distribution is 5, then b =   `{:(x_(i) "  :",3,5,7,4),(f_(i)"  :",2,a,5,b):}`