De Veaux Map

Part I: Exploring and Understanding Data

Chapter 1: Exploring and Understanding Data =

• 1.1: What is Statistics?
• 1.2: Data
• 1.3: Variables

Types of Variables: Categorical, Quantitative, Identifier, Ordinal

Chapter 2: Displaying and Describing Categorical Data

• 2.1: Summarizing and Displaying a Single Categorical Variable

The area principle

Frequency tables

Bar charts

Pie charts

• 2.2: Exploring the Relationship Between Two Categorical Variables

Contingency tables

Conditional distributions

Independence

Plotting conditional distributions (with pie charts, bar charts and segmented bar charts)

Chapter 3: Displaying and Displaying Quantitative Data

• 3.1: Displaying Quantitative Variables

Histograms

Stem and leaf displays

Dotplots

• 3.2: Shape

Unimodal, bimodal or multimodal

Symmetric or skewed

Outliers

• 3.3: Center

Median

• 3.4: Spread

Range, min, max

Interquartile range, Q1, Q3

• 3.5: Boxplots and 5-Number Summaries
• 3.6: The Center of a Symmetric Distribution: The Mean

Mean or Median?

• 3.7: The Spread of a Symmetric Distribution: The Standard Deviation
• 3.8: Summary---What to Tell About a Quantitative Variable

Chapter 4: Understanding and Comparing Distributions

• 4.1: Comparing Groups with Histograms
• 4.2: Comparing Groups with Boxplots
• 4.3: Outliers
• 4.4: Timeplots
• 4.5: Re-Expressing Data: A First Look

...To improve symmetry

...To equalize spread across groups

Chapter 5: The Standard Deviation as a Ruler and the Normal Model

• 5.1: Standardizing with z-Scores
• 5.2: Shifting and Scaling

Shifting to adjust the center

Rescaling to adjust the scale

Shifting, scaling and z-Scores

• 5.3: Normal Models

The "nearly normal condition"

The 68-95-99.7 Rule

• 5.4: Finding Normal Percentiles

Normal percentiles

From percentiles to scores: z in reverse

• 5.5: Normal Probability Plots