| A | B |
|---|
| random assignment | when participants are assigned to each experimental group with an equal chance of being chosen. |
| random sample | where each person has equal probability of being chosen; best practice |
| sampling bias | when some members of a population are systematically more likely to be selected in a sample than others |
| representative sample | a subset of a population that seeks to accurately reflect the characteristics of the larger group. |
| population | the entire group that you want to draw conclusions about |
| sample | the specific group that you will collect data from |
| dependent variable | effect of the change in the experiment. This is what gets measured. |
| independent variable | the variable that changes in an experiment. |
