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CBSE Class 10 Answered

The following distribution shows the daily pocket money of children of a locality. The mean pocket allowance is Rs. 18. Find the missing frequency f. Daily pocket money (in Rs.) No. of children 11-13 7 13-15 6 15-17 9 17-19 13 19-21 f 21-23 5 23-25 4
Asked by Topperlearning User | 06 Nov, 2017, 01:22: PM
answered-by-expert Expert Answer
Daily pocket money (in Rs.)
   xi
            fi
            fi xi
            11-13
  12
           7
        84
            13-15
  14
           6
        84
            15-17
  16
           9
                 144        
            17-19
  18
           13
         234
            19-21
  20
           f
         20f
            21-23
  22
           5
         110
            23-25
  24
           4
          96
 
 
44+f
 
Error converting from MathML to accessible text.
Answered by | 06 Nov, 2017, 03:22: PM
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