3. Calculate the mean for the following frequency distribution:
Marks 10-20 20-30 30-40 40-50 | 50-60 60-70 | 70-80
Frequency 3 7 10 6 8 2 4
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5
Step-by-step explanation:
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Answered by
0
Answer:
7
Step-by-step explanation:
0-10 /////// 7
10-20 - 0
20-30 - 0
20-30 - 0
30-40 - 0
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