#### Quickie Quiz 4

- Graph the following data on the graph seen further below. The data was provided by
the Micronesian seminar and is the pass rate on the College entrance examination.

x: Year (1994=0) |
y: PNI Pass Rate |

0 |
40 |

1 |
29 |

2 |
41 |

3 |
42 |

4 |
69 |

5 |
69 |

6 |
75 |

- Find the slope of the best fit line through the data.

_______________________
- Find the intercept the best fit line through the data.

_______________________
- Sketch a best fit line through the data based on the slope and intercept.

_______________________
- Calculate the correlation coefficient r.

_______________________

- Plot the following Chuuk State data on the same graph above.

Year (1994=0) |
Chuuk Pass Rate |

0 |
29 |

1 |
23 |

2 |
23 |

3 |
16 |

4 |
24 |

5 |
28 |

6 |
27 |

- Calculate the correlation coefficient r for the Chuuk data

______________________
- Which state shows a steady improvement in pass rates?

_______________________
- Which state shows a pass rate that fluctuates randomly year to year?

_______________________

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