# Statistics Quiz: Question Preview (ID: 19310)

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The whole group of units that you are going to study is... |
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a) The sample | b) The population | c) A Individual | d) The absolut frequency | |

A quantitive statistical variable is... |
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a) A variable that you can describe with words. | b) A variable that you can describe with numbers. | c) A variable that you can describe only with pictures. | d) A variable that you can not describe | |

Qualitatives varibles take on values that are... |
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a) Numbers | b) Numbers and words | c) Names or labels (words) | d) Numbers and labels | |

Quantitive variables can be cassified as... |
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a) Quantitatives or continuos | b) Discrete or continuos | c) Qualitatives or discrete | d) Can not be classified | |

Four friends take an IQ test. Their scores are 96, 100, 106, 114. What is the mean? |
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a) 103 | b) 106 | c) 104 | d) 100 | |

Look at this serie of data: 12, 23, 10, 11, 8, 15, 10, 9. What is the median? |
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a) 23 | b) 12 | c) 11.5 | d) 10.5 | |

Look at this serie of data: 8, 23, 10, 11, 8, 15, 10, 9, 10. What is the mode? |
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a) 23 | b) 8 | c) 10 | d) 9 | |

A simple random sample consists of four observations: 1, 3, 5, 7. Based on these sample observations, what is the best estimate of the standard deviation of the population? |
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a) 2 | b) 6 | c) 2.58 | d) 6.67 | |

What is the mode and mean for the following set of numbers? 4,9,8,2,16,4,4,8,9,6 |
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a) mean = 7, mode =8 | b) mean = 7, mode =4 | c) mean = 6, mode =8 | d) mean = 8, mode =9 | |

What type of graphical representation would be best to display the following data? Between 0 and 10 years old there are 2 people, between 10 and 20 there are 8 people , between 20 and 30 there are 8 people. |
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a) Histogram | b) Line graph | c) Bar graph | d) Stem and leaf plot | |

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