## Reflection: Developing a Conceptual Understanding Outliers and Outsiders: The Impact on Data - Section 4: Our City Statistics Project - Identifying Outliers and their Impact

A theme that I have noticed when reflecting about teaching the Our City Statistics Project is using technology to develop conceptual understanding.

When discussing outliers, we had a class conversation about what outliers are and the importance of having a common definition of an outlier (so we all can agree on what constitutes being different from other data points). However, the mathematics behind computing and identifying outliers was beyond the skill level of many of my students.

In order to differentiate instruction and develop conceptual understanding, I allowed students to develop their conceptual understanding of outliers through a visual inspection of their group's scatterplots. Some groups went the next step and analyzed the data without the outliers, thus figuring out a way to begin to assess the impact of outliers in addition to identifying outliers.

Using technology was extremely helpful in developing a beginning understanding of the concept of an outlier, and how it applies to statistics.

Developing a Conceptual Understanding of Outliers
Developing a Conceptual Understanding: Developing a Conceptual Understanding of Outliers

# Outliers and Outsiders: The Impact on Data

Unit 8: Our City Statistics: Who We Are and Where We are Going
Lesson 10 of 10

## Big Idea: Students real world relationships to gain understanding of the power of individual data points.

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Standards:
Subject(s):
Math, Algebra, Statistics, outlier (Stats), Line of Best Fit, Measurement and Methods, Common Core, master teacher project, normal distribution, inspiredata, Correlation Coefficient, scatterplot, 9th grade
90 minutes

### Jason Colombino

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