This is a draft cheat sheet. It is a work in progress and is not finished yet.
Parameter vs. Statsitic
Variable |
Parameter, Population |
Statistic, Sample |
proportion or perecnetage |
π |
p |
average (mean) |
µ |
X̄ |
Sampling Methods
Probability |
Non-Probability |
Simple random |
Convenience |
Systematic |
Quota |
Stratisied |
Judgment |
Cluster |
Snowball |
|
|
Variable Types
Numerical: numbers |
Categorical: names |
Discrete |
Nominal |
Continuous |
Ordinal |
Data Sources
Primary Data |
Secondary Data |
Surveys |
Published Sources |
Experiments |
Presenting Data
| |
Categorical Data |
Numerical Data |
Summary Tables |
frequency count, cross tabulation |
frequency count in different intervalls/bins |
Charts |
bar charts, pie charts |
histogram |
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|
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