Center, Shape, & Spread of Data Practice Test

Two students tracked the number of hours they studied each week for 6 weeks. Student A: 2, 2, 3, 3, 3, 5. Student B: 1, 2, 3, 3, 4, 5. Which statement correctly compares the medians and the variability using the range? (Use range $=\max-\min$.)

A teacher computed the mean test score for a class of 5 students: 72, 75, 78, 80, 95. Another student joins the class with a score of 20. Which statement best describes how adding the score of 20 affects the mean and the median of the scores? Assume the class now has 6 students.