Annenberg Foundation
Annenberg Learner: Against All Odds: Inside Statistics: Correlation
Twin studies track how similar identical and fraternal twins are on various characteristics, even if they don't grow up together. Correlation lets researchers put a number on it. Scroll down the page to find comprehensive student and...
Varsity Tutors
Varsity Tutors: Hotmath: Practice Problems: Correlation and Lines of Best Fit
Twenty problems present a variety of practice determining correlation based on data in a scatter plot and using lines of best fit with given data. They are given with each step to the solution cleverly revealed one at a time. You can...
Missouri State University
Missouri State U.: Introductory Statistics: Concepts, Models, and Applications
This is a comprehensive online text about statistics which covers all the basic concepts.
Other
Stat Soft: Getting Started With Statistics Concepts
Definitions of the basic concepts in statistics. Great for review and discussion or for introduction into topics.
Science Buddies
Science Buddies: Which Team Batting Statistic Predicts Run Production Best?
Here's a sports science project that shows you how to use correlation analysis to choose the best batting statistic for predicting run-scoring ability. You'll learn how to use a spreadsheet to measure correlations between two variables.
Other
Stat Soft: Statistics Glossary
Dozens of statistical terms are defined and illustrated in this glossary.
CK-12 Foundation
Ck 12: Statistics: Rank Sum Test and Rank Correlation
[Free Registration/Login may be required to access all resource tools.] This Concept introduces students to the rank sum test and rank correlation for two non-paired samples.
CK-12 Foundation
Ck 12: Scatter Plots and Linear Correlation Grades 11 12
[Free Registration/Login may be required to access all resource tools.] This Concept introdices scatterplots and linear correlation for bivariate data.
University of North Carolina
University of North Carolina Writing Center Handouts: Statistics
When presenting an argument, the use of statistics to support a point can be very effective. This handout offers advice on both how to read statistics so that you understand exactly what they mean, and how to use them in your argument so...
Rice University
Hyper Stat Online Statistics Textbook: Chapter 3: Describing Bivariate Data
This chapter of an online textbook begins with a description of scatterplots, then focuses on the Pearson Product Moment Correlation.
Science Education Resource Center at Carleton College
Serc: The Evolution of Pearson's Correlation Coefficient
For this activity, students explore nine scatter plots to develop their understanding of how two quantitative variables are related. Through an exploration of the properties of this association, they come to understand the standard...
Other
Correlation Coefficients
This page provides a good discussion of correlation coefficients (r,) which indicate the "strength of the linear association between variables." Includes formulas and scatter plots. Some prior knowledge of statistics might be helpful.
National Institute of Standards and Technology (NIST)
Nist: Engineering Statistics Handbook: Scatter Plots and Linear Regression
An explanation of scatter plots followed by examples of the many different kinds of scatter plots.
Texas Education Agency
Texas Gateway: Tea Statistics: The Regression Equation
A tutorial on how to find the line of best fit or least-squares regression line for a set of data in a scatter plot using different methods and calculations.
Khan Academy
Khan Academy: Correlation Coefficient Review
The correlation coefficient r measures the direction and strength of a linear relationship. Calculating r is pretty complex, so we usually rely on technology for the computations. We focus on understanding what r says about a scatterplot.
CK-12 Foundation
Ck 12: Statistics: Scatter Plots and Linear Correlation
[Free Registration/Login may be required to access all resource tools.] In this tutorial, students learn how to interpret data through the use of a scatter plot.
CK-12 Foundation
Ck 12: Scatter Plots and Linear Correlation
[Free Registration/Login may be required to access all resource tools.] This lesson covers plotting a scatterplot and finding a linear equation that best fits the data.
Texas Instruments
Texas Instruments: Scatterplots and Correlation With Ti 83
Students learn how to enter a list of data and use these lists to graph two-variable statistics. They learn how to analyze the resulting scatterplots to assess the correlation between two variables.
CK-12 Foundation
Ck 12: Statistics: Inferences About Regression
[Free Registration/Login may be required to access all resource tools.] This Concept introduces students to testing a claim about linear regression.
CK-12 Foundation
Ck 12: Statistics: Scatter Plots Grade 8
[Free Registration/Login may be required to access all resource tools.] Represent data in a scatterplot.
Alabama Learning Exchange
Alex: Statistically Thinking
The object of this project is for students to learn how to find univariate and bivariate statistics for sets of data. Also, the students will be able to determine if two sets of data are linearly correlated and to what degree. The...
University of Glasgow
University of Glasgow: Steps Statistics Glossary: Correlation Coefficient
Overview of correlation coefficient, or a number between 1 and -1 which measures the degree to which two variables are linearly related. It is followed by a description of the Pearson product moment correlation coefficient.
Shmoop University
Shmoop: Basic Statistics & Probability: Scatter Plots & Correlation
The statistics resource explores scatter plots and correlation. Students learn about the concepts through notes and detailed examples. The resource consists of practice exercises to check for comprehension of the topics.
National Council of Teachers of Mathematics
The Math Forum: Nctm: Ask Dr. Math: Correlation of a Scatterplot
This page from Ask Dr. Math describes the correlation of a scatterplot and gives an example of one with no correlation.