Sampling: We wanna do research that makes generalizations or test hypotheses about a large population. But typically we can’t get our hands on everyone in the population. So we try to get a random and representative sample.
Sampling error: The difference between the population and the sample. Standard error is an estimate of amount of sampling error.
Descriptive statistics –> inferential statistics
Regression: a statistical analysis used to predict scores on an outcome variable, based on scores on one or multiple predictor variables.
Simple regression: one predictor variable
Multiple regression: multiple predictors