Outlier Effects on Mean and Range
Grade 8th Grade · Math · 20 min· Ccss 8.sp.a.1
What's Included
Learning Objective
I can describe how outliers affect the mean and range of a data set.
Warm-Up Video
ProfKelley · 10:32
What to Report When There is an Outlier - Measures of Central Tendency
Guided Notes
3 key concepts
- 1
The mean uses all of the data in a set, but it is easily influenced by outliers.
- 2
The median is the middle value in a sorted data set, and it is the best measure of central tendency to report when there are outliers.
- 3
The mode is the value that occurs most frequently, but it is not robust because small changes in frequency can easily affect it.
Practice Questions
3 questions · Multiple choice & Short answer
Exit Ticket
Quick comprehension check
“A data set of test scores includes the following values: 75, 80, 82, 85, 90, 92, 95, and 30. Identify the outlier in this data set. Then, describe how the outlier affects the mean of the data set.”
Complete Lesson Package
Get all 3 ready-to-use resources:
