John Tukey — American Scientist born on June 16, 1915, died on July 26, 2000

John Wilder Tukey ForMemRS was an American mathematician best known for development of the FFT algorithm and box plot. The Tukey range test, the Tukey lambda distribution, the Tukey test of additivity, and the Teichmüller–Tukey lemma all bear his name... (wikipedia)

An approximate answer to the right problem is worth a good deal more than an exact answer to an approximate problem.
Numerical quantities focus on expected values, graphical summaries on unexpected values.
Far better an approximate answer to the right question, which is often vague, than the exact answer to the wrong question, which can always be made precise.