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| A brief description of a study or experiment, including info about the participants, the procedure, and the results. |
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| The variable manipulated by the researcher and expected to inlfuence the dependent variable. |
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| Measures of behaviors or mental processes expected to be affected by IV's. |
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| Variables that increase, decrease, or reverse the relationship between the IV and DV. |
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| A variable that is assumed to be a predictor of one or more DV's and, at the same time, is predicted by one or more IV's. |
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| Average score in a distribution; ex: mean, median, mode. |
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| Spread of scores in a distribution; ex: range, variance, and standard deviation. |
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| Numerical summaries of samples or populations. Ex: frequency distributions and measures of average, range, and SD. |
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| Procedures used to generalize from samples to populations. |
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| Research conducted to test the validity of a hypothesis. |
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| Confidence Interval Estimation |
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Definition
| A range of values with a known probability of containing a parameter. |
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Definition
| An outcome that leads to rejection of the null hypothesis; it indicates that the outcome was unlikely due to chance. |
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| A statistical test of significance used to compare two means. |
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| Also known as analysis of variance; a statistical test that compares means of two or more groups. |
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| The effect of combinations of levels of IV's on the DV. |
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Definition
| Nonparametric statistical tests that compare theoretical or expected frequencies with obtained frequencies. |
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Definition
| Chi-square test used to compare obtained with expected frequencies on one variable. |
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Definition
| Chi-square tests used to compare obtained with expected frequencies on two variables. |
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Definition
| Discrete variables whose values are mutually exclusive, such as sex or age. |
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