Unformatted text preview: Symmetric and Skewed – Left/right skewed Other shape issues Bi modal ( two humps) suggests two diverse groups combined into sample Outlier – a point or points separated from the bulk of the data. Calls for investigation. Can suggest existence of another group ( like bimodal) or might be a mistake Put a number on it For symmetric distrubtions the sample mean and sample standard deviation measure center and spread....
View Full Document
- Spring '08
- Standard Deviation, Mean, standard deviation measure, typical value, Distrubutions