AP Stats Chapter 3

What is a convenience sample?

• A convenience sample is a method of random sampling where every individual has an equal chance of being selected.
• A convenience sample is a type of non-probability sampling where subjects are selected based on their easy accessibility.
• A convenience sample is a type of probability sampling that ensures a representative sample of the population.
• A convenience sample is a sampling technique that involves selecting subjects based on their demographic characteristics.

What is a voluntary response sample?

• A voluntary response sample is a random sampling method where participants are chosen by the researcher.
• A voluntary response sample is a method where participants are selected based on demographic criteria.
• A voluntary response sample is a mandatory sampling method where all individuals must participate.
• A voluntary response sample is a non-probability sampling method where participants self-select to be part of a study.

What is a simple random sample?

• A simple random sample is a subset of a population where each member has an equal chance of being selected.
• A simple random sample is a method where only the first half of a population is selected.
• A simple random sample is a selection of individuals from a population that is biased towards certain traits.
• A simple random sample is a group of people chosen based on their characteristics.

What is a stratified random sample?

• A stratified random sample involves selecting only one subgroup from the population.
• A stratified random sample is a technique that uses only qualitative data for analysis.
• A stratified random sample is a method that samples the entire population at once.
• A stratified random sample is a method of sampling that involves dividing a population into subgroups and randomly sampling from each subgroup.

In a stratified random sample groups are...

• heterogenous

• homogenous

In a cluster sample groups are...

• heterogenous

• homogenous

What is a cluster sample?

• A cluster sample is a sampling method that involves dividing the population into clusters and randomly selecting entire clusters for the sample.
• A cluster sample is a technique where only one individual is selected from each cluster.
• A cluster sample involves surveying every member of the population without grouping them.
• A cluster sample is a method that selects individuals randomly from the entire population.

What is a systematic random sample?

• A systematic random sample is a technique where samples are taken at random intervals without a starting point.
• A systematic random sample is a sampling method where every nth individual is selected from a list after a random starting point.
• A systematic random sample involves selecting every individual from a population without any randomization.
• A systematic random sample is a method where individuals are chosen based on their age.

What does undercoverage refer to?

• some people are less likely to be chosen

• people cant be reached or refuse to answer

• problems in the data gathering instrument or process

What does nonresponse refer to?

• some people are less likely to be chosen

• people cant be reached or refuse to answer

• problems in the data gathering instrument or process