Mathematics Homework Help

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Part 1

Explain the importance of the correlation
coefficient in a multiple regression model. Support your
reasoning with an example

Part 2

Amazon.com has become one of the most successful online merchants. Two measures of its success are sales and net income/loss figures. The data can be found in the file, Amazon. ( pictured at bottom)

Use Excel to complete the following:

1. Construct a scatter plot for Amazon’s net income/loss and sales figures for the period 1995–2015.
2. Determine a polynomial model, including its order (or degree), for Amazon’s net income/loss and sales figures.

Use Word to complete the following:

1. Explain your process of determining the polynomial model
2. Submit your work in a Word document and attach your Excel file.
3.