Determine whether r is positive, negative, or zero for each of the following data sets.Oo o(c)(b)<>(a)For the data in scatterplot (a), the value of r isజిశింర

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Description: Determine whether r is positive, negative, or zero for each of the following data sets.Oo o(c)(b)<>(a)For the data in scatterplot (a), the value of r isజిశింర

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Algebra & Trigonometry with Analytic Geometry

13th Edition

ISBN:9781133382119

Author:Swokowski

Publisher:Swokowski

Chapter2: Equations And Inequalities

Section2.1: Equations

Problem 78E

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Determine whether r is positive, negative, or zero for each of the following data sets.
Oo o
(c)
(b)
<>
(a)
For the data in scatterplot (a), the value of r is
జిశింర

Expert Solution

Step 1

We know that the correlation coefficient is

i. greater than 0 if y increases with increase of x

ii. less than 0 if y decreases with increase of x

iii. equal to 0 if y does not increase or decrease with increase of x

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