Under What Circumstances Is the Point-Biserial Correlation Used

question 48

Multiple Choice

Under what circumstances is the point-biserial correlation used?

• A)in the same circumstances when a repeated-measures t test would be used
• B)in the same circumstances when an independent-measures t test would be used
• C)when both X and Y are dichotomous variables
• D)when both X and Y are measured on an ordinal scale (ranks)

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Definitions:

High Start-Up Costs

The significant initial investment required to establish a new business, which can include expenses related to research and development, manufacturing, marketing, and administrative infrastructure.

Few Competitors

A market condition where only a small number of firms operate, often leading to higher prices and reduced competition.

Oligopoly

Market structure in which relatively few sellers compete and high start-up costs form barriers to keep out new competitors.

Planned Economy

Economic system in which government controls determine business ownership, profits, and resource allocation to accomplish government goals rather than those set by individual firms.