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a sequence of raw data in rank order from the smallest to the largest observation. | |

separates data into stems (leading digits) and leaves (or trailing digits). | |

The normal probability distribution is bell-shaped and symmetric. | |

right skewed | |

a graphical representation of data where slices of the pie, represented by degrees, are associated with the frequency or proportion of observations falling into a category. | |

If the shape of the distribution/histogram is bell- shaped, we can make the following statements | |

Standard deviation | |

chart where vertical bars are plotted in descending order, combined with a cumulative percentage line | |

statistic | |

a summary table of data showing the number of observations in each of the defined numerically-ordered categories (or classes). | |

Many continuous random variables are naturally described by a | |

yield values that represent quantities (weight, salary, return-on-investment, GPA, # of children). | |

the manner in which data are distributed | |

The standard deviation determines the width of the curve. Larger values of the standard deviation result in wider, flatter curves; while smaller values result in thinner, more peak | |

gives us the graph of the histogram that represents the continuous random variable. | |

There is an entire family of normal distributions, defined by the mean and variance | |

discrete | |

68.26% of values are within 1 standard deviation of the mean. 95.44% of values are within 2 standard deviations of the mean. 99.73% of values are within 3 standard deviations of th | |

a tabular summary of a set of data that accumulates information from class to class. This type of tabular summary can be constructed from frequency and relative frequency distribut | |

The most important type of continuous random variable is characterized by a | |

variable | |

those methods involved in the collection, summarizing (numerically or graphically), presenting, and analyzing a set of data in order to describe the various features of that data s | |

data | |

a measure of relative location that describes how far an individual observation is from the mean | |

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