19. [DATA] Exam Scores The data in the next column represent exam scores in a statistics class taught using traditional lecture and a class taught using a "flipped" classroom. The "flipped" classroom is one where the content is delivered via video and watched at home, while class time is used for homework and activities. Traditional 70.8 69.1 79.4 67.6 85.3 78.2 56.2 81.3 80.9 71.5 63.7 69.8 59.8 Flipped 76.4 71.6 63.4 72.4 77.9 91.8 78.9 Source: Michael Sullivan. 76.8 82.1 70.2 91.5 77.8 76.5 a. Determine the mean and median score for each class. Comment on any differences. b. Suppose the score of 59.8 in the traditional course was incorrectly recorded as 598. How does this affect the mean? the median? What property does this illustrate?