Back to the lesson
Describing Distributions flashcards
0/12
12 cards remaining
All 12 cards in this deckShow
- What does “Arithmetic Mean” mean?Center and Spread
- The equal-share average of a numerical dataset.
- What important condition applies to arithmetic mean?Center and Spread
- An extreme value can pull the mean away from most observations.
- What does “Population Standard Deviation” mean?Center and Spread
- A root-mean-square measure of distance from a population mean.
- What important condition applies to population standard deviation?Center and Spread
- Use population N only when treating the data as the complete population.
- What does “Outlier Fences” mean?Shape and Outliers
- A conventional boundary for screening unusually distant numerical values.
- What important condition applies to outlier fences?Shape and Outliers
- A flagged outlier is not automatically an invalid observation.
- What does “Shape and Resistance” mean?Shape and Outliers
- The differing sensitivity of center summaries to extreme observations.
- What important condition applies to shape and resistance?Shape and Outliers
- Mean above median is suggestive, not a complete proof of distribution shape.
- What does “Comparing Centers” mean?Comparing Groups
- A comparison of typical locations using a consistent summary.
- What important condition applies to comparing centers?Comparing Groups
- A center difference alone does not describe overlap or establish causation.
- What does “Comparing Variability” mean?Comparing Groups
- A comparison of how widely values vary within groups.
- What important condition applies to comparing variability?Comparing Groups
- Do not substitute a range for an IQR in a same-measure comparison.