Math, asked by uzmanoor304, 4 days ago

calculate the arithmetic mean of the following grouped distribution by shortcut method​

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Answers

Answered by muskangarg18714
0

Answer:

CI. CM. F. xifi

10-20. 15. 5. 75

20-30. 25. 8. 200

30-40. 35. 12. 420

40-50. 45. 20. 900

50-60. 55. 3. 165

60-70. 65. 2. 130

total. 50. 1890

mean =xifi/fi. =1890/50 =37.8

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