Sample Definitions
A simple random sample is done by...
What is ensuring everyone in the population has an equal chance of being selected?
Inference is...
What is a prediction about a population based on a sample?
Treatments are...
What is what is done (or not) to experimental units?
A control group is...
What is a group that doesn't recieve treatment to keep other variables consistent?
Undercoverage is...
What is when some people are less likely to be chosen?
A convenience sample is done by...
What is selecting participants based on their ease of access, not on a random process?
The difference between homogeneous and heterogeneous groups is...
What is homogeneous groups share the same characteristics while heterogeneous groups have different characteristics?
The difference between an observational study and an experiment is...
What is no treatment imposed for observational study while treatment imposed for experiments?
The 3 ways to perform a random assignment are...
What is label, randomize, and assign?
Non-Response Bias is...
What is people can't be reached/refuse to answer so they aren't surveyed?
A cluster random sample is done by...
What is dividing the population into groups and randomly selecting some groups as the sample?
What is false? Stratified random samples are homogeneous.
Experimental units are...
What is what/who is getting treatments imposed?
Single blinding is...
What happens when subjects or experimenters don't know about their treatment assignment?
Response Bias is...
What is problems in the data gathering method or process?
A stratified random sample is done by...
What is spliting the population into groups (strata) then choosing SRS from each strata?
Cluster random samples are heterogeneous. True or False?
What is true?
A confounding variable is...
What is when an unaccounted for outside variable can affect the results of the experiment?
Double blinding is...
What is when subjects and experimenters don't know about their treatment assignment?
A matched pairs design is...
What is when subjects are paired and then randomly assigned to a treatment?
A systematic random sample is done by...
What is choosing a random starting point and then using equal intervals?
Simple random samples and convenience samples are homogeneous.
What is they are both neither? It depends on the situation.
Replication is...
What is when more than 1 person is in each treatment?
The placebo effect is...
What is when the false treatment works and gives the same result as the actual treatment?
A randomized block design is...