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# Math 2 - Vocab- MA

### Data Analysis

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

Numbers or facts that describe something, It can be numerical, counted, or descriptive. | data |

A straight line that best fits the data on the coordinate plane. | line of best fit |

This a the sum of all the results included in the sample divided by the number of observations. It is the same as the average. | mean |

Commonly used measures of statistics that describe the center or frequency of a distribution: mean, median, mode. | Measures of central tendency |

A measurement of the variation of the data. This can include the range, standard deviation, percentiles, quartiles, and interquartile range. | measures of spread |

The middle term in a set of data. If the data set has an even number of terms the median is the average of the two middle terms. | median |

This is the most frequently occurring element in a set. | mode |

This describes the relationship between one set of data that decreases as another set of data increases. Inversely related is a synonym. | negative correlation |

In a set of data, there is no clear pattern to the points when graphed on a coordinate plane, the correlation of the points is neither positive or negative. | no relative coorelation |

A continuous distribution that is symmetrical, bell-shaped and whose mean, median, and mode ar equal. The randon variable has an infinite theoretical range. | normal distribution |

Total data set. | population |

This describes the relationship between one set of data that increases as another set of data increases. This is synonymous with directly related. | positive correlation |

This is the difference between the maximumasnd the minimum value in a data set. | range |

This is part of a population selected to predict information about the population as a whole. | sample |

A graph that displays a collection of ordered pairs. | scatter plot |

This measures the deviation between the scores and the mean; it measures how dispersed the data is. The higher this is the more spread out the data is from each other. | standard deviation |

Created by:
Barbara Webb