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Find the missing frequencies f1 and f2 in the following frequency distribution if it is known that the mean of the distribution is 50 and the total frequency is 150.

x 10 30 50 70 90
f 17
    f1
32
    f2
19

Asked by Topperlearning User 6th November 2017, 1:28 PM
Answered by Expert
Answer:
  xi
       fi
              fi xi
     10
       17
            170
     30
        f1
               30 f1
     50
       32
            1600
     70
        f2
               70 f2
      90
       19
             1710
 
 
Answered by Expert 6th November 2017, 3:28 PM
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