We’ll examine the results of the 2014–2015 SAT math exam with a mean of 501 and standard deviation of 117, as reported in Table 5.1.
1. What percentage of seniors scored lower than 300 on the math SAT?
2. What percentage scored between 600 and 700 points?
3. Your score is 725. What is your percentile rank?

Table 5.1

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Table 5.1 2014-2015 SAT Component Means and Standard Deviations for High School Seniors Critical Reading Mathematics Writing Number of Test Standard Standard Standard Takers Mean Deviation Mean Deviation Mean Deviation 1,108,165 485 110 501 117 475 109