POLS625

Assignment
18

Correlation

Analyze the
relationship between x and y.

1.
What is the null hypothesis?

2.
Calculate Pearson’s correlation
coefficient (r) manually.

3.
Calculate Pearson’s correlation
coefficient (r) using Excel.

4.
Interpret the correlation
coefficient (r).

Strength?

Direction?

5.
Find out if there is a statistically
significant relationship between x and y manually.

6.
Replicate the results using SPSS.

Highlight the significance. What confidence level is it reaching? Write the answer next to the significance.

*Visit the course web page and find an example of SPSS output:

x |
y |

8 |
25 |

9 |
37 |

3 |
12 |

5 |
32 |

7 |
22 |

8 |
31 |

9 |
30 |

10 |
30 |

9 |
15 |