Chapter+9+JMP+Assignment+2

Chapter+9+JMP+Assignment+2 - Chapter9JMPAssignment2

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Chapter 9 JMP Assignment 2 In this assignment, we are going to explore some bivariate statistics and graphs.  Specifically, we will be looking at variances, covariances, and correlations. The data set we are looking at for this assignment contains data from 49 people who were  asked to record how much time they spent reading a newspaper every day for a week.  At  the end of that week, they were asked various questions to see how much of the week’s  news they could recall.  As a result, “Length” represents the average amount of time spent  daily reading the newspaper for that week, while “Recall represents the percentage of  news that was correctly recalled.   1. Go to our class site on Sakai and open the folder labeled Chapter 9.  The click on the  file called “Bivariate Data Length and Recall.jmp.”  You should be asked whether to  open the file in JMP.  Click OK.  You should see the  N  = 49 observations of the two  variables, Length and Recall. 2. One maxim is that you should always do univariate descriptive statistics before  conducting the primary analysis.  Go ahead and get the distribution statistics for  both Length and Recall.  Do you see anything unusual?  If not, go to the next step. 3. Go to the  Analyze  menu, go down to  Multivariate Methods  and from that menu  select “Multivariate.” 4. Select Length and Recall and put them into the  Y, Columns  box.  Click  OK . 5. Notice the “Correlations” matrix at the top of the window.  Although it is small (2 x 
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Chapter+9+JMP+Assignment+2 - Chapter9JMPAssignment2

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