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# Sean's key terms 2

Question | Answer |
---|---|

line graph | A graph used to show how a set of data changes over a period of time |

average | the sum of two or more quantities divided by the number of quantities; the mean |

bar graph | A graph using bars to compare quantities. The height or length of each bar represents a designated number |

frequency | The number of items an item occurs |

graph | A visual way to display data |

horizontal axis | The axis on which the categories or values are shown in a bar and line graph |

integers | The whole numbers and their opposites...,-3, -2, -1, 0,1,2,3 |

key | A sample data point used to explain the stems and leaves in a stem and leaf plot. |

line plot | a diagram that shows the frequency of data on a number line |

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

measures of central tendency | numbers that are used to describe the center of data. These measures include the mean, median, and mode. |

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 |

mode | The numbers or items that appear most often in a set of data |

negative numbers | A number that is less than zero |

opposites | Numbers that are the same distance from zero in opposite directions |

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

positive numbers | A number that is greater than zero |

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

stem-and-leaf plot | A system used to condense a set of data where the greatest place value of the data forms the stem and the next greatest place value forms the leaves. |

vertical axis | The axis on which the scale and interval are shown in a bar or line graph. |

Created by:
sean532