Mean, median, mode, geometric mean, quartiles, range, interquartile range, standard deviation, variance, coefficient of variation, skewness, kurtosis, boxplot, normal probability plot (Sections 3.1, 3.2, 3.3, 6.3) Index numbers (bonus eBook Section 16.8) Inference about one groupĬonfidence interval estimate of the mean (Sections 8.1 and 8.2) t test for the mean (Section 9.2) Chi-square test for a variance or standard deviation (bonus eBook Section 12.7)Ĭonfidence interval estimate of the proportion (Section 8.3) Z test for the proportion (Section 9.4) A ROADMAP FOR SELECTING A STATISTICAL METHOD Data Analysis Task Describing a group or several groupsįor Numerical Variables Ordered array, stem-and-leaf display, frequency distribution, relative frequency distribution, percentage distribution, cumulative percentage distribution, histogram, polygon, cumulative percentage polygon (Sections 2.2 2.4)įor Categorical Variables Summary table, bar chart, pie chart, Pareto chart (Sections 2.1, 2.3)
