QI 104 Lesson 3: Histograms, Pareto Charts, and Scatter Plots
A run chart might be the most classic tool for displaying and interpreting data for improvement, but it's not the only one. In this short lesson, IHI's Dave Williams, PhD, teaches you to use three other charts that can also help you understand variation within data sets. These tools may help you from time to time in your improvement work.

Note: This work was developed under Contract Number No. HHSM-500-2015-00297C, entitled, “Hospital Engagement Network II (“HEN 2.0”). This publication's contents are solely the responsibility of the authors and do not necessarily represent the official views of The Centers for Medicare & Medicaid Services.

Estimated Time of Completion: 30 minutes
Learning Objectives
After completing this lesson, you will be able to:
1. Draw and interpret a histogram.
2. Draw and interpret a Pareto chart.
3. Draw and interpret a scatter plot.
David Williams, Ph.D., Executive Director, Institute for Healthcare Improvement View Profile
Michael Briddon, MA, Editorial Director, Institute for Healthcare Improvement View Profile
Laura Fink, Senior Managing Editor, Institute for Healthcare Improvement View Profile
James Moses, MD, MPH, Medical Director of Quality Improvement, Associate CQO, Boston Medical Center View Profile
You must be a registered IHI.org user to take this lesson.
You must achieve a minimum score of 75% to successfully complete this lesson.