overview and descriptive statisticspeople.stat.sfu.ca/~cao/teaching/stat285/chapter1.pdf · trimmed...
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Overview and Descriptive Statistics
Outline – Populations, Samples and Processes
Outline – Pictorial and Tabular Methods in Descriptive Statistics
Outline – Measures of Location
Outline – Measures of Variability
Chapter 1: Descriptive Statistics
1.1 Populations, samples and processes
Descriptive statistics
Challenger example
Probability and statistics
Data collection
Data collection (cont’d)
1.2 Pictorial Methods
Golf course yardages
Histograms
Unequal bin widths
Categorical data
Bar plot for health complaints
Sorted bar plot for health complaints
Multivariate data
Measures of location
Quartiles, percentiles, and quantities
Trimmed means
Summary of categorical data
Sample Variance and standard deviation
Properties of variance
Boxplots
Comparative boxplots