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# Jackson-MA-Unit4

Term | Definition |
---|---|

measures of spread | The range and the mean absolute deviation measure the spread for a set of data |

median | The middle number in a set of data when the data are arranged in numerical order. If the data has an even number, the median is the mean of the two middle numbers. |

minimum value | the lowest number in a data set |

mode | The number(s) or item(s) that appear most often in a set of data. |

mutually exclusive | Two or more events whose outcomes can never be the same. |

outlier | A number in a data set that is much lower or higher than the other values |

range | The difference between the greatest number and the least number in a set of data. |

sample | Some portion of a larger group selected to represent that group. |

simple random sampling | A sample that is chosen without any preference, representative of the entire population. |

stem and leaf plot | A display of data in which each piece of the data is separated into two numbers that are used to form a stem and a leaf. |

box and whisker plot | A diagram that divides a set of data into four parts using the median and quartiles. |

frequency | How often a piece of data occurs. |

frequency table | a table that shows the total for each category or group of data. |

histogram | A bar graph in which the data are organized into equal intervals. The height of the bar represents the frequency in that interval. |

interquartile range | The difference between the upper and lower quartiles representing the middle half of the data in the set. |

maximum value | the highest value in a data set |

mean absolute deviation | the average distance of each data item from the mean |

mean | The sum of the numbers in a set of data divided by the number of pieces of data in the set. |

measures of center | The mean and median measure the center for a set of data |