Descriptive Statistics

Descriptive Statistics

1. frequency data

   • Univariate Statistics
     • frequency tables (p. 103)
       • nominal/categorical variables
     • scatterplots and line plots (p. 104)
       • numerical vectors
     • pie charts (p. 108)
       • nominal/categorical data
     • bar plots (p 109)
       • probably the most frequent form of representing the frequencies of nominal/categorical variables
     • pareto-charts (p. 111)
     • histograms (p. 112)
       • most widespread for representing the frequencies of interval/ratio variables
   • Bivariate Statistics
     • crosstabulation (p. 136)
       • used with nominal/categorical variables
     • bar plots and mosaic plots (p. 137)
     • spineplots (p. 138)
       • when the dependent variable is nominal/categorical and the independent variable is ratio-scaled
     • line plots (p. 139)
       • used for summarizing frequencies
     • boxplots (p. 141)
       • frequencies of nominal/categorical variables
     • interaction plots (p. 143)
       • one interval/ratio-scaled variable depending on two, say, nominal/categorical variables