Find the mean and variance for the following frequency distribution: | Classes | 0-10 | 10-20 | 20-30 | 30-40 | 40-50 | |---------|------|-------|-------|-------|-------| | Frequencies | 5 | 8 | 15 | 16 | 6 |

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TextVariance of Grouped Data

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TextVariance of Grouped Data