# MATH 10041 Study Guide - Midterm Guide: Linear Regression, Regression Analysis, Scatter Plot

## Document Summary

Understand and recognize different trends in scatterplots, strengths of associations, and shapes. The correlation coefficient as a measure of strength of an association. Students understand that the correlation coefficient is a number that measures strength of a linear association between two numerical variables; It is used for linear trends between two. They understand that it does not tell us whether an association is linear, but gives the strength of an association known to be linear; Students understand that correlation does not imply causation; Understand the line of best fit as a tool for summarizing a linear relationship and predicting future observed values; Understand why the regression line is called the line of best fit or least squares regression and include a description of how the line is calculated; Understand that, when the trend is linear, the regression line connects points that represent the mean value for y for each value of x.