Idea 1
Idea 2
Idea 3
Sample Methods
Vocab
100
The concept of idea 1
What is examine part of the whole
100
The concept of idea 2
What is randomize
100
The concept of idea 3
What is sample size matters
100
Assign a number to every individual and pick random numbers to choose (each grouping equally likely)
What is simple random sample
100
The list of individuals that could be sampled
What is sampling frame
200
Looking at an entire population is nearly impossible, therefore we examine a smaller group or a _____
What is sample
200
Randomizing ensures that, on average, the sample looks like ____
What is the entire population
200
The fraction of the population doesn't matter, the ____ of the individuals in the sample does
What is number
200
Break up the population in homogenous groups, then use SRS for each strata
What is stratified sampling
200
We expect small changes from sample to sample
What is sampling variability
300
Everyone that falls into the category
What is population
300
By randomizing, we get the gist of the whole, or ____
What is representative sample
300
A special sample where everyone is asked
What is census
300
Break up the population into heterogenous groups, then census one group that is picked at random
What is cluster sampling
300
Failing to represent a group proportionally
What is undercoverage
400
Under-or over- representation of a group
What is bias
400
Randomizing allows us to draw ____ about the population from the sample
What is inferences
400
The number that is the model for the population
What is population parameter
400
If order doesn't matter, then order the sampling frame, start randomly and pick every X person
What is systematic sampling
400
When a chosen respondent fails to respond
What is nonresponse bias
500
Best strategy to eliminate bias
What is select sample at random
500
Randomizing protects against ____ and ____
What is known and unknown
500
Values caculated for the sampled data
What is sample statistic
500
Pick parts of other sampling methods and throw them together
What is multistage sampling
500
If the wording of a question or the situation would influence the response
What is response bias
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