Green Bridge Learning Resource For Cumulative Frequency Tables, Curves And Box Plots

Overview

When data is grouped, a cumulative frequency table keeps a running total as you move through the groups. Plotted as a curve, it lets you read off the median and quartiles, and a box plot then summarizes the whole spread at a glance.

In this lesson you will build cumulative frequency tables, draw and read cumulative frequency curves to find the median and quartiles, and use those values to draw and interpret a box plot.

Lesson Evaluation

Congratulations on completing the lesson on Cumulative Frequency Tables, Curves And Box Plots. Now that youve explored the key concepts and ideas, its time to put your knowledge to the test. This section offers a variety of practice questions designed to reinforce your understanding and help you gauge your grasp of the material.

You will encounter a mix of question types, including multiple-choice questions, short answer questions, and essay questions. Each question is thoughtfully crafted to assess different aspects of your knowledge and critical thinking skills.

Use this evaluation section as an opportunity to reinforce your understanding of the topic and to identify any areas where you may need additional study. Don't be discouraged by any challenges you encounter; instead, view them as opportunities for growth and improvement.

Cumulative frequency is: A. the most common value B. a running total of frequencies C. the largest frequency D. the range Answer: B
For n values, the median is read at: A. n/4 B. n/2 C. 3n/4 D. n Answer: B
The lower quartile Q1 is read at: A. n/4 B. n/2 C. 3n/4 D. n Answer: A
The interquartile range is: A. max - min B. Q3 - Q1 C. Q3 + Q1 D. the median Answer: B
A box plot displays how many key values? A. three B. four C. five D. six Answer: C