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Unformatted text preview: Study Guide for RAQ 1 Section 1.1-1.3 • Definition of statistics (page 1) • Read pages 7 and 8 Chapter 2 Section 2.1: • Populations vs. samples Section 2.2 • Types of variables; categorical and quantitative (see page 16 for other names) Section 2.3 • Numerical summaries used for categorical variables • Graphical displays used for categorical variables Section 2.4: • Graphical displays of quantitative variables: dotplots, histograms, stem-and-leaf plots, boxplots • What can be learned from graphical displays shape (from histograms, stem-and- leaf, and dotplots and an idea about shape from a boxplot) • See the summary on page 36) Section 2.5: • Measures of location (mean, trimmed mean, median) • Measures of position: Q1, Q2 = median, Q3, percentiles in general • Relation between mean and median (if ‘skewed to the right’, mean > median; otherwise opposite)—see page 40 • Measures of spread (or variability): range, IQR, standard deviation (see page 41) • 5-# summary and interpretation...
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This note was uploaded on 04/07/2008 for the course STAT 200 taught by Professor Barroso,joaor during the Spring '08 term at Pennsylvania State University, University Park.
- Spring '08