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# Chpts 5 & 6

### Vocabulary from Chpts 5 and 6

Vocabulary Word | Definition |
---|---|

data | information collected about people or things |

survey | a set of questions that is used to gather information |

sample | a part of the group that is chosen to represent the whole group, or population |

random sample | a sample for which every person in the population has an equal chance of being chosen |

cumulative frequency | a running total of frequencies |

outlier | a data value that is well-separated from other data values in a set |

mean | an average of a group of numbers |

median | the middle number when data are arranged in order |

mode | the number or item that occurs most often in a set of data |

stem-and-leaf plot | a graph that organizes data by place |

pictograph | a graph that uses symbols or pictures and a key to display countable data |

bar graph | a graph that displays countable data with vertical or horizontal bars; compares facts about groups of data |

line graph | a graph that shows how data change over time |

trend | a pattern over time, such as increasing, decreasing, or staying the same, that is shown by data in part or all of the graph |

circle graph | a graph that show how parts of the data are related to the whole and to each other |

scale | series of numbers placed at fixed distances on a graph |

interval | the difference between oe number and the next on the scale |

ordered pair | a pair of numbers used to locate a point on a grid |

histogram | a bar graph that shows the frequency data occur within intervals |

mean | the average of a set of numbers, found by dividing the sum of the set by the number of addends |

median | the middle number in a set of data that are arranged in ordered |

Created by:
Central 5th Math
on 2007-05-01