Research Methods Exam #3
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22 terms
Terms | Definitions |
|---|---|
 central tendency | a single score that is most representative of the entire group and defines the center of distribution |
| conceptually and comuptationally define the mean | arithmetic average; sum of scores divided by the number of scores |
| conceptually and comuptationally define the median | midpoint of distribution; middle score when listed smallest to largest |
| conceptually and comuptationally define the mode | score of category with the greatest frequency |
| skewness and its relationship between the mean, median, and mode | The mode is the most frequent, the median falls to the |
| which measure of central tendency are most influcenced by outliers? | The median is the least resistant to the outliers |
| Why are all research questions in psychology about behavioral variablity? | ... |
| variance (conceptionally and computationally) | ... |
| Sum of Squares of a sample (SS); why is it important in understanding mean, variance, and standard deviation? | ... |
| how does "dispersion" relate to the concept of variance? | ... |
| Least Squares | ... |
| In sample variance, why do you divide by "n-1" instead of "n" | ... |
| total variance | ... |
| systematic variance | ... |
| error variance | ... |
| meta-analysis | ... |
| effect size | ... |
| biased vs. unbaised sample statistics | ... |
| what is a Z-score? What does it tell you? | ... |
| What does it mean to standardize data? What are the benefits? | ... |
| How can you start with a data set and standardize it to any mean and standard deviation? | ... |
| standard normal distribution | ... |
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