How does the calculator find a regression line? Don't leave your pupils wondering! The video goes through the process of calculating a regression line algebraically. The example uses a data set and use the formula for calculating the slope and y-intercepts.

Concepts

regression line, linear regression

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Additional Tags

math

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Instructional Ideas

• Use the same data to calculate a regression line in the calculator, and then compare the results 
• Ask pupils to sketch the scatter plot and the equation of the line calculated to reinforce the concept of a regression line

Classroom Considerations

• Learners should already understand the meaning of a regression line and the connection it has to the graph of the points
• The video does not explain why the formulas work or from where they are derived
• The lesson is number 12 in a series of 29 videos

• This video is hosted on YouTube

Pros

• The author uses clear language and helpful explanations

Cons

• None

Common Core

HSS-ID.B.6.a