The following distribution shows the daily pocket allowance of children of a locality. The mean pocket allowance is ₹18. Find the missing frequency f.Daily pocket allowance(in Rupees) 11 - 13 13 - 15 15 - 17 17 - 19 19 - 21 21 - 23 23 - 25Number of children 7 6 9 13 f 5 4
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Dear student:
Allowance=( lower limit + upper limit)/2
Then find the product of fi, & xi for each class interval. Find Σ fi & Σfixi.
Use the formula :
Mean = Σfixi/ Σfi
See the attachment:
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nishant5964:
answer is 20
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