In Order to Calculate the Regression $R ^ { 2 }$

question 42

Essay

In order to calculate the regression $R ^ { 2 }$ you need the TSS and either the SSR or the ESS . The TSS is fairly straightforward to calculate, being just the variation of Y . However, if you had to calculate the SSR or ESS by hand (or in a spreadsheet), you would need all fitted values from the regression function and their deviations from the sample mean, or the residuals. Can you think of a quicker way to calculate the ESS simply using terms you have already used to calculate the slope coefficient?

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Definitions:

Comparative Balance Sheet

A financial statement that presents a company's assets, liabilities, and shareholders' equity at two different points in time to analyze financial health and trends.

Net Income

The company's final financial gain once every expense, tax, and cost is subtracted from the gross income.

Operating Activities

Financial transactions and events related to the core business operations of a company.

Indirect Method

A way of preparing the cash flow statement where net income is adjusted for changes in balance sheet accounts to calculate cash flow from operating activities.