To see if your school's ACT scores are improving since implementing a new program, the ACT
Scores for the past several years should be displayed in a
A) contingency table
B) timeplot
C) bar graph
D) histogram
E) boxplot

Question

Quizplus · Accepted Answer

A timeplot is a graph that shows how a variable changes over time. In this case, the variable is the ACT score, and the time is the year. A timeplot would allow you to see if the ACT scores have been improving since the new program was implemented.

To See If Your School's ACT Scores Are Improving Since