plz ans this..........
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Step-by-step explanation:
shreyas056:
where it is?
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Answer:
Step-by-step explanation:
Age group. fi. xi. fixi
10-20. 40. 15. 600
20-30 32 25. 800
30-40. 35. 35. 1225
40-50. 45 45 2025
50-60. 33. 55. 1815
60-70. 15. 65. 975
By direct method
£fixi/£fi=7440/200=36.2
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