Calculate the Pearson's coefficient r, then explain the direction and strength of the relationship based on the r. 1234ASubject ID56789101112131415161718192021DO222312345LO6700891011121314151617181920Beducation1413121416121512101418121216181410121513Cmemory1121179811411089941068610711384102901198697106114110 (Round calculated results to the hundredth (2nd place to the right of the decimal) when result extendsbeyond that unless otherwise noted).The data set for this question set (Tab Q1 in the Excel data file) comes from a research project thattracks the elderly residents in a community to monitor their cognitive function and general health.Based on the literature, education is considered a protective factor against dementia, and memorydecline is usually the first sign of dementia. So, the researchers would like to know whether educationlevel (measured in number of years of formal schooling) is correlated with memory function (astandardized memory test score) in their sample of elderly residents.Q1a. Create a scatter plot between the two variabloc ucin

Answered: Calculate the Pearson's coefficient r,…

Math

Statistics

Calculate the Pearson's coefficient r, then explain the direction and strength of the relationship based on the r

MATLAB: An Introduction with Applications

6th Edition

ISBN:9781119256830

Author:Amos Gilat

Publisher:Amos Gilat

Chapter1: Starting With Matlab

Section: Chapter Questions

Problem 1P

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Question

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Calculate the Pearson's coefficient r, then explain the direction and strength of the relationship based on the r.

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DO
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education
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memory
112
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106
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113
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102
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110

(Round calculated results to the hundredth (2nd place to the right of the decimal) when result extends
beyond that unless otherwise noted).
The data set for this question set (Tab Q1 in the Excel data file) comes from a research project that
tracks the elderly residents in a community to monitor their cognitive function and general health.
Based on the literature, education is considered a protective factor against dementia, and memory
decline is usually the first sign of dementia. So, the researchers would like to know whether education
level (measured in number of years of formal schooling) is correlated with memory function (a
standardized memory test score) in their sample of elderly residents.
Q1a. Create a scatter plot between the two variabloc ucin

Expert Solution

Step 1

Data is given for education and memory :

Education (x)

Memory (y)

First we will calculate mean for x and y

Mean = sum(x)/n

Mx = 272/20 = 13.6

My = 2054/20 = 102.7

Than we will prepare table :

Step by step

Solved in 3 steps

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