In 1976,Marc and Helen Bornstein studied the pace of life.2 To see if life becomes more hectic as the size of the city becomes larger, they systematically observed the mean time required for pedestrians to walk 50 feet on the main streets of their cities and towns. In Table 4.5, we present some of the data they collected. The variable P represents the population of the town or city, and the variable V represents the mean velocity of pedestrians walking the 50 feet. Problems are based on the data in Table 4.5.
From the data in Table 4.6, calculate the mean (i.e., the average) of the Bornstein errors |Vobserved − Vpredicted|. What do the results suggest about the merit of the model?
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