coefficient_of_determination_r

0 the magnitude of r2 is proportional to the strength

Info iconThis preview shows page 1. Sign up to view the full content.

View Full Document Right Arrow Icon
This is the end of the preview. Sign up to access the rest of the document.

Unformatted text preview: rties to note: r2 ranges in value from 0 to 1.0 The magnitude of r2 is proportional to the strength of the linear relation between x and y strength The location of the r2 value relative to 0 and 1.0 indicates the relative proximity of the linear relation is to a perfect linear relation and no linear relation is Examples Examples An r2 value of 0.75 indicates that the linear relation is ¾ the distance between: is No linear relation between x and y A perfect linear relation between x and y. If the r2 value between motivation to learn and classroom achievement equals 0.16 for females and 0.04 for males, we can conclude that the linear relation between these two variables is 4 times as strong for females as it is for males. strong An r2 value between systolic blood pressure and age equal to 0.38 implies that 38% of the variability of between systolic blood pressure and age is accounted for by their linear relation. accounted Standard Deviation about the LSRL Standard Se = √ (SSR / n-2) This measures the typical amount by This which an observation deviates from the LSRL (analogous to sample standard deviation) standard Example Example Homework Homework Textbook pp. 190 – 196 Textbook # 15, 16, 31, 32, 47 “Anova Table” worksheet Chapter 9 Project – due October 12th!! Unit 3 Test – October 14th!! Example Example 3.36.pdf anova tables.pdf anova answers.pdf...
View Full Document

This document was uploaded on 03/30/2014 for the course MATH AP Statist at Richard Montgomery High.

Ask a homework question - tutors are online