In Order to Calculate the Regression R² You Need the TSS

question 10

Essay

In order to calculate the regression R² 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?

---

Definitions:

Defensive Lockout

A tactic used by employers to prevent workers from working during a labor dispute to protect the company's assets or interests.

Picketing

A form of protest by workers outside a place of employment or another significant location to express grievances or demand rights, often during strikes or labor disputes.

Boycott

A form of protest in which individuals or groups refrain from using, buying, or dealing with products or services of a company as an act of criticism or demand for change.

Mackay Doctrine

A principle from U.S. labor law allowing employers to permanently replace striking workers under certain conditions, established in the case NLRB v. Mackay Radio & Telegraph Co.