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Chapter
1. Categorical variables: Pie Charts and Bar Graphs
| ch_1_categorical_variables_pie_charts_and_bar_graphs_2009.html | 51447175b11c0fbd3f000000 |
| DLAP questions | ch_1_categorical_variables_pie_charts_and_bar_graphs_2009_dlap.xml | 51447175b11c0fbd3f000000 |