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Calculate the average marks by short cut method (Mean)Marks No. Of students 0-10. 310-20. 820-30. 1230-40. 1640-50. 1950-60. 1660-70. 1170-80 5 |
Answer» Answer: 12Explanation: SUM of observations/no of observations 3+8+12+16+19+16+11+5/8 =96/8=12 |
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