Compose a research report addressing the question: Do men and women seem to differ in terms of Y?

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Excel Activity

Complete the following tasks in the Excel file provided and upload your work to Titanium. You’ll want to save a copy of this file, as well as print out a copy to place in your Cookbook.

1) The variable “Color” indicates the favorite color of each person in the sample. Recode the categorical variable “Color” as follows:

· Red = 1

· Blue = 2

· Green = 3

2) Create a graph to demonstrate differences between males and females in terms of their favorite colors.

3) Do males and females appear to differ on levels of Y? Create a graph to illustrate this relationship.

4) Fill in the empty columns using the techniques we learned in class.

5) Provide the values for SSx, SSy, Var(X), Var(Y), SPxy, Covar(X,Y), and Corr(X,Y) in the space provided.

6) Create a bivariate scatterplot of the X and Y variables. Change the Chart Layout so that it includes a chart title and axis titles. Title the chart “Scatterplot of X by Y.” Label the x-axis “X” and the y-axis “Y.”

7) Calculate the values for b0 and b1 and provide these values in the space provided.

8) Using the values you found for b0 and b1 and, calculate Y predicted values for each X value, and plot the regression line (X by Ypred).






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