| A | B |
|---|
| Correlation | relationship between two sets of data |
| Control group | the group that is treated in the same way as the experimental group except that the experimental treatment is not applied |
| Frequency distribution | an arrangement of data so you know how often a score occurs |
| Inferential statistics | numerical methods used to determine whether research data support a hypothesis or whether results were due to chance |
| Population | the total group from which a sample is taken |
| Random sample | equal chance to be represented |
| Scatterplot | graph that demonstrates the direction of the relationship between two variable |
| Stratified sample | representative of various subgroups of the population |
| Correlation coefficient | a statistic that describes the direction and strength of the relationship between two sets of data |
| Descriptive statistics | the listing and summarizing of data in a practical way |
| Experimental group | froup to which an independent variable is applied |
| Median | the middle score or midpoint of variables |
| Normal curve | a symmetrical bell-shaped curve |
| Standard deviation | a measure of variability that describes an average distance of every score from the mean of the scores |
| Survey | sampling of data obtained through interviews and questionnaires |
