Probability Sampling
An example of this sampling method would be the surveyor putting all the population's names into a bowl. Then, collecting 10 samples by drawing names out of the bowl.
What is simple random sampling?
This sample method involves having only interested people involved in the survey.
What is voluntary response sample?
An example of this sampling error would be asking only people in the mall about their opinions on presidential candidates in the upcoming election.
What is undercoverage?
This is the hummingbirds in the example of an experiment on the board.
What are experimental units?
This is what the sample has to be in order to be able to infer about the population.
What is randomly sampled?
An example of this sampling method would be the surveyor beginning by randomly choosing the 5th individual to walk in the door to participate. Then, choosing every 5th individual that walked through the door until 50 samples were chosen.
What is systematic sampling?
This sampling method is based on the ease of accessibility.
What is convenience sample?
An example of this sampling error would be sending out a mail-in survey, but people decide not to send back the survey.
What is non-response?
This is the colors of bird feeder in the experiment on the board.
What are treatments?
This is what the treatments have to be in order to infer about the cause and effect.
What is randomly assigned?
An example of this sampling method would be a company that gives whale-watching tours wants to survey its customers. Out of ten tours they give one day, they randomly select four tours and ask every customer about their experience.
What is cluster sampling?
An example for this sampling method would be a restaurant asking customers to take a quick survey on how well the business is doing before they check out.
What is voluntary response?
This sampling error occurs when a participant wants to fill out the survey in a way to make them sound like a better person than what they actually are.
What is response bias?
This is the hummingbirds' attraction in the experiment on the board.
What is response variable?
This is the "big man" all research studies must present their research plan to in order to begin their research process.
What is Institutional Review Board?
An example of this sampling method would be the surveyor splitting the population into groups based on age. Then, picking 10 people from each age group.
What is stratified sampling?
An example for this sampling method would be wanting to determine which candidate is likely to win an upcoming election, and so you ask everyone in your circle of friends who they intend to vote for.
What is convenience sampling?
This is the way you should reword, "Would you ever tell a friend about how great our product is?"
What is "How likely are you to refer this product to a friend?"
This is "fills them with the same type of hummingbird food" in the experiment on the board.
What is control?
This is what researchers must obtain from their participants in order to begin their research.
What is informed consent?
This is the three common ways to simple random sample.
What is lottery method, random number generator, and table of random digits?
This is the reason we choose NOT to non-probability sample.
What is the samples don't have an equal chance of being selected?
This happens when our sample does not accurately represent our population. The sample now has skewed to be in favor of or against something in particular.
What is bias?
This is what we can do to avoid confounding variables in our experiments.
What is blocking?
Researchers must remember to keep all information obtained _________ to carry out their research.
What is confidential?