Experiments & Surveys
Central Tendency
100
Cross-sectional designs in which X and Y are measured only once. Causal inferences are drawn by comparing scores across 2 or more groups
What is between cases designs
100
Statistics to describe central tendancy
What are mean, median, and mode
200
This popular statistic is suitable only for interval and ratio variables without extreme scores.
What is mean
300
Longitudinal designs involving 1 group of cases. Y (and possily X) is measured multiple times.
What is within case designs
300
You can use this to find the middle for nominal variables
What is mode
400
Use this statistic to find the middle of ordinal, interval, and ratio variables when there are extreme scores
What is median
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