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 |
