Find the variance and standard deviation for the following data: | xi | 4 | 8 | 11 | 17 | 20 | 24 | 32 | |----|---|---|----|----|----|----|----| | fi | 3 | 5 | 9 | 5 | 4 | 3 | 1 |

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TextStandard Deviation of Grouped Data

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Calculate the mean, variance and standard deviation for the following distribution : | Class | 30-40 | 40-50 | 50-60 | 60-70 | 70-80 | 80-90 | 90-100 | |-------|-------|-------|-------|-------|-------|-------|--------| | Frequency | 3 | 7 | 12 | 15 | 8 | 3 | 2 |

TextStandard Deviation of Grouped Data

Find the standard deviation for the following data : | xi | 3 | 8 | 13 | 18 | 23 | |----|---|---|----|----|----| | fi | 7 | 10 | 15 | 10 | 6 |

TextStandard Deviation of Grouped Data