| A | B |
|---|
| Descriptive statistics | classify, organize, and summarize numerical data |
| Inferential statistics | studying a sample and generalizing to the population |
| Population | entire group sharing at least one characteristic |
| Sample | group of observations selected from the population |
| Parameter | measure of a characteristic of the sample |
| Statistic | measure of a characteristic of a sample |
| Random sample | equal, independent chance of being selected |
| Systematic sampling | divide the population by the number of desired sample size |
| Stratified sample | dividing population by strata, then random sample |
| Cluster sample | uses naturally occurring group |
| Incidental sample | sample of convenience |
| Biased sample | contains systematic, not random, error |
| Increased sample size | more likely to represent the population with accuracy |
