Earthquake Depths Use the frequency distribution from Exercise 24 in Section 2-2 to construct a histogram. Using a strict interpretation of the requirements for a normal distribution, do the depths appear to be normally distributed? Why or why not?

Answer:

Step 1 of 1

Depth(y) |

6.6 |

2 |

15.3 |

17.2 |

3.2 |

2.2 |

14.8 |

5.6 |

6.1 |

9.1 |

18.5 |

8.1 |

10 |

13.7 |

8 |

7 |

18.6 |

8.2 |

5.7 |

18.9 |

13.7 |

4.5 |

8.3 |

6 |

14.2 |

5.4 |

17.7 |

9.9 |

17.3 |

5.1 |

5.3 |

15.9 |

13.7 |

4.2 |

5.7 |

5.9 |

15.1 |

8.5 |

14.7 |

16.4 |

4.7 |

8.6 |

8.2 |

15.2 |

10.1 |

14.5 |

5.2 |

7.9 |

3.3 |

6.4 |

The width of each bar has to be equal and the height has to equal the frequency:

This is in the form,

C - I |
Frequency |

1-5 |
7 |

5-9 |
21 |

9-13 |
4 |

13-17 |
12 |

17-21 |
6 |

21-25 |
0 |

No, because the histogram is not bell shaped.