1 Two students draw graphs to represent the numbers of pairs of shoes owned by members of their class. Andrew produces a bipartite graph, but gets it wrong. Barbara produces a completely correct frequency graph. Their graphs are shown below.
\begin{figure}[h]
\includegraphics[alt={},max width=\textwidth]{2e03f6fb-69db-438a-a79e-3e04fab0d08a-2_652_593_575_278}
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\caption{Andrew's graph}
\end{figure}
\begin{figure}[h]
\includegraphics[alt={},max width=\textwidth]{2e03f6fb-69db-438a-a79e-3e04fab0d08a-2_663_652_667_1142}
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\caption{Barbara's graph}
\end{figure}
- Draw a correct bipartite graph.
- How many people are in the class?
- How many pairs of shoes in total are owned by members of the class?
- Which points on Barbara's graph may be deleted without losing any information?
Charles produces the same frequency graph as Barbara, but joins consecutive points with straight lines.
- Criticise Charles's graph.