simple linear regression equation for sample

When there is only one independent variable and when the relationship can be expressed as a straight line, the procedure is called simple linear regression.Īny straight line in two‐dimensional space can be represented by this equation: It also can be used to predict the value of one variable based on the values of others. Regression is used to assess the contribution of one or more “explanatory” variables (called independent variables) to one “response” (or dependent) variable. To describe the linear association between quantitative variables, a statistical procedure called regression often is used to construct a model. Quiz: Test for Comparing Two Proportions.Quiz: Test for a Single Population Proportion.Test for a Single Population Proportion.Quiz: Two-Sample t-test for Comparing Two Means.Two Sample t test for Comparing Two Means.Quiz: Two-Sample z-test for Comparing Two Means.Quiz: Introduction to Univariate Inferential Tests.Two-Sample z-test for Comparing Two Means.Quiz: Point Estimates and Confidence Intervals.Point Estimates and Confidence Intervals.Quiz: Normal Approximation to the Binomial.Quiz: Populations, Samples, Parameters, and Statistics.Populations, Samples, Parameters, and Statistics.

Quiz: Introduction to Numerical Measures.

Simple linear regression equation for sample