Psychology 110 online Name _______________________________

Grace Chan

## Correlation Lab

### Positive correlation (4.5)

variable | variable | ||

units | units | ||

1 | 6 | 1 | 6 |

2 | 7 | 2 | 7 |

3 | 8 | 3 | 8 |

4 | 9 | 4 | 9 |

5 | 10 | 5 | 10 |

Scatterplot for positive correlation *(see lab manual p.18)*

Describe the above correlation based on the scatterplot (strength and direction):

________________________________________________________________________________

Calculate the correlation coefficient of the above *(use Vassarstats – see lab manual p.19)*

*r *= ________ *p* (two tailed) =___________

Make a conclusion of the above correlation based on the correlation coefficient (*r*) and the *p*-value:

### Negative Correlation (4.5)

variable | variable | ||

units | units | ||

1 | 6 | 1 | 6 |

2 | 7 | 2 | 7 |

3 | 8 | 3 | 8 |

4 | 9 | 4 | 9 |

5 | 10 | 5 | 10 |

Scatterplot for negative correlation *(see lab manual p.18)*

Describe the above correlation based on the scatterplot (strength and direction):

________________________________________________________________________________

Calculate the correlation coefficient of the above *(use Vassarstats – see lab manual p.19)*

*r *= ________ *p* (two tailed) =___________

Make a conclusion of the above correlation based on the correlation coefficient (*r*) and the *p*-value:

________________________________________________________________________________

Answer the following: (1)

If the data suggests that the correlation between depression and anxiety is about 1.25. What can you say about the strength of the relationship?

Which correlation is stronger? *r* = .06 or *r* = -.06