**Graphing and Correlation (7 points total)**

- If variables change in the same direction, what type of correlation is this called?

a. |
Positive correlation |

b. |
Negative correlation |

c. |
Positive causation |

d. |
Negative causation |

- When interested in examining how one variable changes in relation to another, which of the following descriptive statistics would you want to use?

a. |
Mean |

b. |
Variance |

c. |
Correlation |

d. |
Standard Deviation |

- Which of the following refers to a correlation between two variables?

a. |
Bicorrelate |

b. |
Bivariate |

c. |
Two-way variance |

d. |
Two-way analysis |

- Which of the following correlations would be interpreted as a weak relationship?

a. |
-.26 |

b. |
-.46 |

c. |
-.66 |

d. |
-.86 |

- Which of the following is the strongest correlation?

a. |
.23 |

b. |
.87 |

c. |
.49 |

d. |
-.91 |

** **

- If X increases in value as Y decreases in value, what type of correlation exists?

a. |
Positive |

b. |
Negative |

c. |
Neutral |

d. |
None |

- If you were interested in tracking or checking the trend of your GPA during the time you were in high school, which of the following might you use?

a. |
Bar chart |

b. |
Line chart |

c. |
Pie chart |

d. |
Histogram |