Data Analysis with Microsoft Excel: Updated for Office 2007

328 Statistical Methods hypothesis that a linear relationship exists between the mortality index and temperature. On the basis o ...

Chapter 8 Regression and Correlation 329 Checking the Regression Model As in any statistical procedure, for statistical inferenc ...

330 Statistical Methods Let’s apply this diagnostic to the mortality index data. The Regression com- mand creates this plot for ...

Chapter 8 Regression and Correlation 331 The plot shows that most of the positive residuals tend be located at the lower and hig ...

332 Statistical Methods Recall that if the residuals follow a normal distribution, they should fall evenly along the superimpose ...

Chapter 8 Regression and Correlation 333 a large value might be followed by a small value, or large and small values could be cl ...

334 Statistical Methods and the standard deviation s is s5 Å 2 n 1 n 2 n 1 n 212 a 2 n 1 n 2 n 21 b If r is the observed number ...

Chapter 8 Regression and Correlation 335 Use the functions RUNS(range, center) and RUNSP(range, center) to calculate the number ...

336 Statistical Methods The most often used measure of correlation is the Pearson Correlation coeffi cient, which is usually ide ...

Chapter 8 Regression and Correlation 337 activities, his or her grades will improve as a result? Or is it more likely that if th ...

338 Statistical Methods To calculate the correlations and p values: 1 Return to the Mortality Data worksheet. 2 Enter the labels ...

Chapter 8 Regression and Correlation 339 correlated and which are not. One way of doing this is to create a correla- tion matrix ...

340 Statistical Methods Now let’s create a matrix of the correlations for all of the variables in the workbook. To create a corr ...

Chapter 8 Regression and Correlation 341 Figure 8-23 Create Correlation dialog box 4 Click the OK button. Excel generates the ma ...

342 Statistical Methods only 10.5% of the variation in the calculus score. Another way of saying this is that using HS Rank as a ...

Chapter 8 Regression and Correlation 343 tests, the Bonferroni approach rolls all of the tests into one big package, with 0.05 r ...

344 Statistical Methods Depending on the number of variables you are plotting, SPLOMs can be diffi cult to view on the screen. I ...

Chapter 8 Regression and Correlation 345 a relationship anywhere near as strong as the relationship between mortal- ity index an ...

346 Statistical Methods c. Create a scatter plot of mortality versus temperature and add a linear trend line to the plot, showin ...

Chapter 8 Regression and Correlation 347 if we used foods that cover a wider range of fat-content values? e. Save your changes t ...