S-ID.2.6.c

Represent data on two quantitative variables on a scatter plot, and describe how the variables are related.

c. Fit a linear function for a scatter plot that suggests a linear association.

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Formative Assessments
Formative Assessments
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Students are asked to informally fit a line to model the relationship between two quantitative variables in a scatterplot, write the equation of the line, and use it to make a prediction.
House Prices
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Virtual/Hands-on Manipulatives
Virtual/Hands-on Manipulatives
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In this activity, students use sliders to explore the relationship between price and number of pieces for various Star Wars LEGO sets and to make several predictions based on that model. Students will also interpret the parameters of their equation in context.
Desmos: Lego Prices
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This manipulative will help students in understanding scatter plots which are particularly useful when investigating whether there is a relationship between two variables. Students could develop a systematic plan for collecting and entering data into the scatter plot manipulative and set appropriate ranges for the x and y scales.
Scatterplot
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This manipulative allows the user to enter multiple coordinates on a grid, estimate a line of best fit, and then determine the equation for a line of best fit.
Line of Best Fit
Assessment Questions
Assessment Questions
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FSA Sample Question
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Hook/Performance Tasks
Hook/Performance Tasks
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This problem solving task asks students to examine the relationship between shops and crimes by using a correlation coefficient.
Coffee and Crime
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