1. Find the mean of: Class-intervals 20-30 30-40 40-50 50-60 60-70 Frequency 8 12 15 9 6.
please need this answer it's data handling
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Answered by
1
Answer:
9
Step-by-step explanation:
ans is 8+12+15+6/5
=45/5
=9
the mean of class interval 20-30 30-40 40-50 50-60 60-70 is 9
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10
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