Writing in the Journal of Family History (Jan. 2010), Hong Kong University historian Sangkuk Lee investigated the genealogy of a certain Korean clan. Of interest to Lee was whether or not a family name continued into the next generation in the clan genealogy (called a continued line ) or dropped out (called a dropout line ). Lee used side-by-side pie charts to describe the rate at which certain occupational titles of clan individuals occurred within each line type. Similarly constructed MINITAB bar charts are shown above.
a. Identify the two qualitative variables graphed in the side-by-side pie charts.
b. Give a full interpretation of the charts. Identify the major differences (if any) between the two line groups.