please see the attached word file for the rubric, and excel file for data you need to use. the assignment has to be done by excel.
- Develop a multiple linear regression model to predict Wal-Mart revenue, using CPI, Personal Consumption, and Retail Sales Index as the independent variables.
- Check the residuals box under residuals and Excel will generate predicted values and residuals at the bottom of the output for the multiple regression model.Then, use these two output values to create the residual plot by Excel’s scatter chart (Insert tab > Charts > Scatter chart).Comment on what you see on the plot.
- Does it seem that Wal-Mart’s revenue is closely related to the general state of the economy?Explain it.
- Identify and remove the five cases corresponding to
December revenue.(a) Develop
a multiple linear regression model to predict Wal-Mart revenue, using CPI,
Personal Consumption, and Retail Sales Index as the independent variables.(b) Check
the residuals box under residuals and Excel will generate predicted values and
residuals at the bottom of the output for the multiple regression model. Then, use these two output values to create
the residual plot by Excel’s scatter chart (Insert tab > Charts > Scatter
chart). Comment on what you see on the
plot.(c) Does
it seem that Wal-Mart’s revenue is closely related to the general state of the
economy?(d) Compare
the results of parts (a) and (d), which of these two models is better? Use R-square values, adjusted R-square
values, Significance F values, p-values, scatter plot, residual plot and normal
probability plot to explain your answer.(e) Compare
the results of parts (a) and (d), what can you conclude about the impact of December
data to Wal-Mart Revenue?


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