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ORC Resource Number #1465
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The Regression Line and Correlation: Correlation and the Regression Line
PROFESSIONAL COMMENTARY

In the third of four related activities (all accessible from this site), students work with bivariate data to investigate relationships between variables. The applet allows students to enter bivariate data on a coordinate grid using various scales. The applet then graphs the regression line, shows its equation, and indicates the correlation between the variables. Students then investigate how the clustering of data near the line or scattering of data farther from the line affects the correlation coefficient. (author/sw)

OHIO STANDARDS
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Mathematics Academic Content Standards
Data Analysis and Probability Standard
NATIONAL STANDARDS
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Principles and Standards for School Mathematics
Data Analysis and Probability Standard
RESOURCE TYPE
Content Resource
STANDARDS ALIGNMENT
Grades 8–12
TOPICS
Mathematics --
Statistics;
Data analysis;
Technology;
KEYWORDS
applet;
bivariate data;
line of best fit;
regression line;
correlation
Publisher: National Council of Teachers of Mathematics