Question

if mean of the data is 18 find p. xi 10,15,20,25
fi 5,10,p,8​

Answer 1

Answer:

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Answer 2

Answer:

Mean = $\frac{sum of f}{n}$

  18 = $\frac{10+15+20+25+5+10+p+8}{8}$

 18  = $\frac{93+p}{8}$

  18 x 8 =  93 + p

   144 = 93 + p

     p  =  144 - 93

         = 51

Hope this helps