AP Statistics

Simple Random Sample

A sampling technique where each member of the population has an equal chance of being selected.

Stratified Sampling

A method that divides the population into subgroups and samples from each subgroup.

Cluster Sampling

A sampling technique where entire groups or clusters are randomly selected and all members within those clusters are surveyed.

Systematic Sampling

A method where every nth member of the population is selected after a random starting point.

Population

The entire group of individuals or items that is of interest in a study.

Sample

A subset of individuals or items selected from a larger population.

Response Bias

A tendency for participants to respond inaccurately or falsely to survey questions.

Nonresponse Bias

A form of bias that occurs when individuals selected for a sample do not respond, affecting the representativeness of the sample.

Convenience Sampling

A sampling method that relies on data collection from readily available participants rather than a random selection.

Survey

A method of gathering information from individuals, typically through questions.

Quality Control

A system of maintaining standards in manufactured products by testing a sample of the output.

Random Number Generator

A tool used to randomly select numbers or items from a defined set.

Pest Inspection Method

Techniques used to inspect and assess the presence of pests in a group of plants.

Alumni Survey Bias

Bias that may occur in surveys of alumni based on selection criteria or framing of questions.

Response Rate

The percentage of participants who respond to a survey out of the total number selected.