Question

part 2: comparing groups
return to the mathematics test data that we examined in part 1 of this assignment. it turns out that some of the students who completed the mathematics test had taken a test preparation course in order to learn strategies that might help them do well on the test. lets compare the test scores for students who completed a test preparation course against the test scores for students who did not complete such a course. this data is summarized in the graphical display and table of statistics shown below. use this information to answer questions 13 through 18.

1. based on your examination of the above boxplots and table of summary statistics, does it appear the test preparation course was helpful to students? please explain.

preparation course	mean	standard deviation	minimum	q1	median	q3	maximum
no	64.7	14.2	19	54	65	74	99

Explanation:

The mean score of students who took the preparation course (68.6) is higher than those who didn't (64.7). Also, the median score of the 'Yes' group (69) is greater than the 'No' group (65). The first - quartile (Q1) and third - quartile (Q3) values are also higher for the 'Yes' group. Overall, the boxplot and summary statistics suggest that the course was helpful as students who took it generally had higher scores.

Answer:

Yes, the test preparation course appears to have been helpful to students as the mean, median, Q1 and Q3 scores are higher for students who took the course compared to those who did not.