Bar Chart Comparative Bar Chart Categorical Display Data Distribution Categorical Compare 2 or More Groups Display Data Distribution Compare 2 or More Groups Display Data Distribution Compare 2 Groups Display Data Distribution Can also be used to compare groups if done carefully Investigate Relationship Between 2 Numerical Variables Investigate Trend Over Time a Data Set 1 To learn about credit card debt of students at a college the financial aid office asks each student in a random sample of 75 students about their amount of credit card debt 1 How many variables are in the data set 10 Dotplot Comparative Dotplot Stem and Leaf Display Comparative Stem and Leaf Display Histogram Scatterplot Time Series Plot 1 ii Are the variables categorical or numerical O categorical numerical 1 for two or more groups 1 1 for two or more groups 1 1 for two groups 1 2 1 collected over time Numerical to compare groups O to investigate the relationship between two numerical variables Numerical Numerical Numerical Numerical Numerical Purpose Numerical iii Would the purpose of the graphical display be to display the data distribution to compare groups or to investigate the relationship between two numerical variables Oto display the data distribution