Concept explainers
Mediocre Grade Deflation. The bar graph shows the percentage of U.S. college freshmen with an average grade of C in high school.
The data displayed by the bar graph can be described by the mathematical model
105.
a. According to the formula, in 2010, what percentage of U.S. college freshmen had an average grade of C in high school? How does this compare with the percent displayed by the bar graph?
b. According to the formula, how many years after 1980 will no more than 1.2% of college freshmen have an average grade of C in high school? Which years does this include?
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