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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 / n2)
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...
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This document was uploaded on 03/30/2014 for the course MATH AP Statist at Richard Montgomery High.
 Winter '13
 Jessell
 Coefficient Of Determination

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