Term
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Definition
| Variables that have an unwanted influence on the outcome of an experiment. AKA extraneous variables. |
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Term
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Definition
| The researcher observes or measures two or more naturally occuring variables to find the relationship between them. In correlation research, the researcher does not directly manipulate the variables. |
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Term
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Definition
| Bell-shaped curve with half over the mean, and half under the mean |
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Term
| Positively (Negatively) Skewed Distribution |
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Definition
| Contains a predonderance of scores on the low (high) end of the scale. The mean will be higher (lower) than the medium in a positively (negatively) skewed distribution. |
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Term
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Definition
| The probablity of concluding that a difference exists when in fact the difference does not exist. A statistically significant difference is a difference not likely due to chance. By consensus, this is something that would only show up =<5% of the time. Smaller p-value = more significant results. |
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