Data Interpretation

Some problem solving questions involve data analysis. Many occur in sets of two to five questions that share common data in the form of tables, graphs, etc. In questions that involve data analysis, graphs are drawn as accurately as possible. Therefore, you can read or estimate data values from the graphs (whether or not there is a note that the graphs are drawn to scale).

The following strategies may help in answering problem solving questions that involve data analysis:

• Scan the data briefly to see what it is about, but do not attempt to analyze it in too much detail before reading a question. Focus on only those aspects of the data that are necessary to answer the question. Be sure to read all notes related to the data.
  
• When possible, try to make visual comparisons of the data given in a graph and estimate products and quotients rather than perform involved computations.
  
• Remember that these questions are to be answered only on the basis of the data given, everyday facts (such as the number of days in a year), and your knowledge of mathematics.
  
• Do not make use of specific information you recall that might relate to the particular situation on which the questions are based unless that information can be derived from the data provided.