The stemplot below displays midterm exam scores for 34 students taking a calculus course. The highest possible test score was 100. The teacher declared that an exam grade of 65 or higher was good enough for a grade of C or better. This stemplot is most similar to:
A)a boxplot of the data.
B)a time plot of the data with the observations taken in increasing order.
C)a histogram with class intervals 30 $\le$ score

Question

The stemplot below displays midterm exam scores for 34 students taking a calculus course. The highest possible test score was 100. The teacher declared that an exam grade of 65 or higher was good enough for a grade of C or better.  This stemplot is most similar to:
A)a boxplot of the data. 
B)a time plot of the data with the observations taken in increasing order. 
C)a histogram with class intervals 30 $\le$ score < 40, 40 $\le$score < 50, etc. 
D)reporting the five-number summary for the data, with the mean.

Quizplus · Accepted Answer

The stemplot gives a visual representation of the score distribution grouped by tens, which is similar to how a histogram with class intervals is constructed. Therefore, choice C is the best answer. A boxplot would not show the distribution of scores in the same way as the stemplot. A time plot would be inappropriate since the data is not time-based. Reporting only the five-number summary and mean would not give as much information as a histogram or stemplot.

The Stemplot Below Displays Midterm Exam Scores for 34 Students ≤\le≤

The Stemplot Below Displays Midterm Exam Scores for 34 Students $\le$