June 26, 2019

Chapters

Given the absolute cumulative frequency table:

Edad | F_{i} |

[0, 2) | 4 |

[2, 4) | 11 |

[4, 6) | 24 |

[6, 8) | 34 |

[8, 10) | 40 |

## 1.

Calculate the arithmetic mean and standard deviation.

## 2.

Calculate the difference between the values that are the 10 central ages?

## 3.

Create the respective absolute cumulative frequency polygon.

x_{i } | f_{i} | F_{i} | x_{i} · f_{i} | x_{i² } · f_{i } | |

[0, 2) | 1 | 4 | 4 | 4 | 4 |

[2, 4) | 3 | 7 | 11 | 21 | 63 |

[4, 6) | 5 | 13 | 24 | 65 | 325 |

[6, 8) | 7 | 10 | 34 | 70 | 490 |

[8, 10) | 9 | 6 | 40 | 54 | 486 |

40 | 214 | 1368 |

## Mean and Standard Deviation

## 2

The 10 students represent 25% of the central distribution.

Find: P_{37.5} y P_{62.5}.

The 10 central ages are in the interval: [4.61, 6.2] .

## Frequency Polygon

Need a Maths teacher?