Question
Find the mean by step deviation method.
Class | 10 – 15 | 15 – 20 | 20 – 25 | 25 – 30 | 30 – 35 | 35 – 40 |
Frequency | 5 | 6 | 8 | 12 | 6 | 3 |
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Answer
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$\Big[\text{Use }\pi=\frac{22}{7}\Big]$
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$\Big[\text{Use }\pi=\frac{22}{7}\Big]$
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