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# Unit 1 Key Terms

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

The three measures of central tendency are... | Mean, Median, and Mode |

The three types of random samples are... | Simple, Systematic, and Stratified |

The two types of biased samples are... | Convenience and Voluntary Response |

The two types of samples are... | Random and Biased |

Information gathered from a study, survey, or other means of collection is called... | Data |

Data that can be placed into categories is called... | Qualitative Data |

Data in the form of measurements or numerical values is called... | Quantitative Data |

The large group of which individuals are chosen from to participate in a survey would be called the... | Population |

The group of indiviuals chosen from the population to participate in a survey would be called the... | Sample |

This is a special survey in which all of the units of a population are included. | Census |

A sample chosen without any preference is called... | Random |

A sample chosen with preference where individuals chosen are favored is called... | Biased |

The difference between the greatest and least element is called the... | Range |

The range is a measurement of... | dispersion |

A chart that lists the number of times, or frequency, that each data value appears is called a... | Frequency Table |

A table where values are grouped into classes that contain a range of values is called a... | Grouped Frequency Table |

30% and the 30th percentile mean the same thing: true or false | False |

The number of standard deviations that a value is from the mean is called the... | Z-score |

This allows you to determine the likely range for the true population proportion. | Margin of Error |

When you add up all of the elements in a data set and then divide by the number of elements in the set you are finding the... | Mean |

The element that occurs most often in a data set is called the... | Mode |

The element that is in the middle of a data set is called the... | Median |

Created by:
tmjenkins