# Reading Tables and Drawing Conclusions Practice AK

A teacher surveyed the students in the third grade about how many pets they owned. The table below summarizes the data:

Number of pets | Frequency |

0 | 5 |

1 | 18 |

2 | 17 |

3 | 4 |

4 | 3 |

5 | 1 |

6 | 1 |

Use the table above to answer the following questions:

- How many third graders were surveyed? 49 (add up all of the frequencies)
- What is the mode of the data?
**1**(the most children have 1 pet) - What is the median of the data?
**2**(if you layout all of the datapoints, 5 zeros, 18 ones, etc, the middle point is 2) - What is the mean of the data?
**1.78**(if you add up all of the datapoints (for a shortcut, multiply the frequencies by the numbers, so 5 times 0, 18 times 1, 17 times 2) and then divide by 49, you get the mean or average of the data). - What is the range of the data?
**6**(the maximum minus the minimum = 6 - 0 = 6) - What is the minimum of the data?
**0** - What is the maximum of the data?
**6**

A class of AP Physics students took the AP Physics exam (which is notoriously difficult!). The table below summarizes the students' scores on the exam

Score on AP Physics Exam | Frequency |

1 | 9 |

2 | 10 |

3 | 8 |

4 | 6 |

5 | 3 |

Use the table above to answer the following questions:

- How many students took the exam?
**36**(add up all of the frequencies, each of these represents a student) - What is the mode of the data?
**2**(10 students, the most of any category, got a 2) - What is the median of the data?
**2**(If you like up all of the data, the middle two points are both 2, the average of 2 and 2 is 2) - What is the mean of the data?
**2.5**(add up all of the data points and divide by 36) - What is the range of the data?
**4**(5 - 1 = 4) - What is the minimum of the data?
**1** - What is the maximum of the data?
**5**