Cluster
Convenience
Systematic
Simple Random
Random
Categorical
Quantitative
Categorical
Ordinal
Interval
Ratio
Cluster
Systemaic
Convenience
Stratefied
Self selecting
Self-selecting
Convenience
Systematic
Stratefied
Simple Random
True
False
Skewed
Uniform
Linear
Exponential
Quadratic
The boundary between two populations
Missing data
Biased questions
Convenience sample
Ordinal data
Data values below a certain threshold
The first and last row in the table
The sums of the rows and columns
The labels of the rows and columns
Automobiles
Accident victims