Reflection: Vertical Alignment Introduction to Scatter Plots, Line of Best Fit, and the Prediction Equation - Section 1: Warm up


Vocabulary early on in Algebra I can be essential to students for when they see r, r squared, and residuals in later math classes.  Even though this is more of an introduction to these concepts, it is imperative that teachers try to use the correct vocabulary.

Teachers need to have a good grasp on these concepts before presenting it to students.  This online blog shows some good examples for teachers to look at and work through.  These concepts have been known to be difficult for teachers and students.

Teachers need to collaborate with AP Stat teachers as well for a stronger understanding.  They will not teach as much as the AP Stat teachers on these concepts in Algebra I, but their presentations will be more clear and precise with a deeper understanding.

  Clarifying the difference between r and r squared
  Vertical Alignment: Clarifying the difference between r and r squared
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Introduction to Scatter Plots, Line of Best Fit, and the Prediction Equation

Unit 3: Linear Functions
Lesson 15 of 20

Objective: SWBAT create a scatter plot, draw a line of best fit, write an equation for the line of best fit to predict values inside and outside of the data.

Big Idea: The emphasis in this lesson is to take students a little beyond the basics of Scatter Plots to explain the correlation coefficient (r) and the coefficient of determination (r squared).

  Print Lesson
best fit line, Math, correlation, scatterplot, linear modeling, Correlation Coefficient, correlation of determination, r value, r squared value
  50 minutes
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