A class of fourth graders takes a diagnostic reading test, and the scores are reported by reading grade level. The 5-number summaries for the 14 boys and 11 girls are shown:

a) Which group had the highest score?
b) Which group had the greater range?
c) Which group had the greater interquartile range?
d) Which group generally did better on the test? Explain.
e) If the mean reading level for boys is 4.2 and for girls is 4.6, what is the overall mean for the class?