Are professors in the faculty of science paid more than professors in the faculty of arts? The data in Table 3.1 were collected from a sample of 400 professors whose rank, faculty, and salary were recorded. The number in each cell is the average salary (in thousands of dollars) for all professors who fell into that category. Use a graph to answer the question posed for this sample.

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Salaries of Professors by Rank and Faculty Full Associate Professor Professor Assistant Professor Arts 55.8 42.21 35.2 Science 61.6 43.3 35.5