Sampling Methods a

Front

What is a sampling method?

Back

A sampling method is a technique used to select individuals or items from a larger population to create a sample that represents that population.

Front

Define simple random sampling.

Back

Simple random sampling is a sampling method where each member of the population has an equal chance of being selected.

Front

What is the difference between sampling with replacement and without replacement?

Back

Sampling with replacement allows selected individuals to be chosen again, while sampling without replacement means once an individual is selected, it cannot be chosen again.

Front

What is stratified sampling?

Back

Stratified sampling is a method where the population is divided into subgroups (strata) and random samples are taken from each stratum.

Front

Explain what a matched pairs experiment is.

Back

A matched pairs experiment is a design where pairs of similar experimental units are compared, with different treatments applied to each unit in the pair.

Front

What is an observational study?

Back

An observational study is a type of research where the researcher observes and records behavior without manipulating any variables.

Front

Define experimental unit in the context of sampling.

Back

An experimental unit is the smallest division of the experimental material such that any two units can receive different treatments.

Front

What is a response variable?

Back

A response variable is the outcome or effect that is measured in an experiment to assess the impact of the treatment.

Front

What does it mean to randomly assign subjects in an experiment?

Back

Random assignment means that subjects are assigned to different treatment groups using random methods to ensure each group is similar.

Front

What is the purpose of using random digits in sampling?

Back

Random digits are used to ensure that the selection of samples is unbiased and each member of the population has an equal chance of being selected.