I If There Is Absolutely No Relationship Between Two Variables

question 129

Multiple Choice

i. If there is absolutely no relationship between two variables, what will Pearson's r equal? ii. If the coefficient of correlation is 0.80, what is the coefficient of determination?
iii. If the coefficient of determination is 0.81, what is the coefficient of correlation?

• A) zero (0); 0.64; 0.9 or -0.9.
• B) zero (0); 0.64; 0.09.
• C) one (1); 0.64; 0.6561.
• D) one (1); 0.64; 0.9 or -0.9.
• E) zero (0); 0.8944; 0.6561.

Comprehend the implications of economic efficiency and external benefits for market outcomes.

Calculate measures of central tendency (mean, median, mode).

Understand the effects of skewed distributions on measures of central tendency.

Construct and interpret bar graphs.

---

Definitions:

Profit Margin

A financial ratio that measures the percentage of revenue remaining after all expenses have been deducted from sales.

Net Income

A company’s remaining income after total revenue has had taxes, expenses, and costs deducted from it.

Equity Securities

Financial instruments representing ownership interest in a company, such as stocks, which may provide income through dividends.

Significant Influence

The power to participate in the financial and operating policy decisions of an investee, but not control them entirely, typically associated with ownership of 20% to 50% of voting stock.