The engineer’s manager has listed some questions he wants the engineer to answer. Which question can best be answered by using the dot plot?
a.Which planes did the most experienced pilots navigate?
b.Why didn’t any planes reach an average cruising speed of Mach 0.88?
c.How many planes underperformed because of a technical problem?
d.How many planes had the optimal average cruising speed of Mach 0.86?