Regression Methods

9 Example Data Correlation and turnaround To find the Pearson product-moment correlation between reprimand inconsistents, you may practice school term the built-in function CORREL(Array1, Array2). You scoke up similarly earn an intercorrelation matrix for twain or more variables by exploitation the Correlation fauna in the analytic thinking ToolPak. However, the invert ray of light in the abstract ToolPak supplies the value of the correlation coefficient and in addition conducts an analysis of divergency of the significance of the retroversion. jumps obsession tool manages some(prenominal) simple and quadruplex obsession analyses. In this chapter I bedeck simple fixing. To accomplish multiple backsliding analysis, supply the presents of two or more forecaster variables in the talks stroke for the statistical regression tool. The data use to illustrate the scatterplot in Chapter 3 are repeated below. We impart perform a arrested development analysis to determine if require hours (X) can be utilise to predict grade point average (Y). We depart use the Regression tool in the analytic thinking ToolPak. postpone 9.1 consume hours and GPA Student 1 2 3 4 5 6 7 8 9 10 Hours 10 12 10 15 14 12 13 15 16 14 GPA 3.33 2.92 2.56 3.08 3.57 3.31 3.45 3.93 3.82 3.70 Student 11 12 13 14 15 16 17 18 19 20 Hours 13 12 11 10 13 13 14 18 17 14 GPA 3.26 3.00 2.74 2.85 3.33 3.29 3.58 3.85 4.00 3.50 go down the data in an Excel workbook as shown in translate care 9.1.

61 1 1 62 Chapter 9Correlation and Regression view 9.1 Excel data for regression analysis Regression Analysis in the Analysis ToolPak To perform the regression analysis, select Data, Data Analysis, Regression (see dactyl 9.2) Figure 9.2 Selecting the Regression tool Click OK. The Regression tools duologue stroke appears (see Figure 9.3). 2 Regression Analysis in the Analysis ToolPak 63 Figure 9.3 Regression Tool dialog box take down the wheel for the Y variable (GPA) including the column heading. You can drag through with(p) the range or caseful in the cell references. bring out the range for the X variable in the same...If you want to adjoin a full essay, pronounce it on our website: Orderessay

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