Statistics 3502/6304 Prof. Eric A. Suess Chapter 3

Data Description – Two or more Variables How to plot data collected on two or more variables. See the comparisons. See the associations.

Two Qualitative Variables Contingency Tables, 2-by-2 tables Stacked Bar Graphs Cluster Bar Graphs

Two Qualitative Variables Exercise 3.39 Frequency counts

Two Qualitative Variables

Two tutorial website Libre Office is an open source Office package. It has a nice spreadsheet program. Lets see an example of Categorical data and making Pivot Tables. LibreOffice Calc Tutorials pivot.ods LibreOffice Calc Tutorialspivot.ods MS Excel Tutorials GCF LearnFree.orgGCF LearnFree.org

One Quantitative Variable and One Qualitative Variable Exercise 3.40 Contact lenses

Two Quantitative Variables

Timeplot Exercise 3.67

Two Quantitative Variables Scatterplot Exercise 3.68

Correlation

Exercise 3.68 Compute the correlation between Calories and Pounds of Sugar Correlation: Pounds, Calories Pearson correlation of Pounds and Calories = 0.986

Three or more Quantitative Variables Scatterplot Matrix

Next Time Review for the Midterm Start Chapter 4 Probability