In Order to Compute a Correlation Coefficient Between Traits a and B

question 58

Multiple Choice

In order to compute a correlation coefficient between traits A and B, it is necessary to have:

• A) one group of subjects, some of whom possess characteristics of trait A, the remainder possessing those of trait B.
• B) measures of trait A on one group of subjects and of trait B on another.
• C) one group of subjects, some of whom have both A and B, some have neither, and some have one but not the other.
• D) two groups of subjects, one which could be classified as A or not A, the other as B or not B.
• E) measure of traits A and B on each subject in one group.

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Definitions:

Primary Sector

Refers to the part of the economy that is involved in the extraction and production of raw materials, such as mining, agriculture, and forestry.

Farming

The practice of cultivating plants and livestock to produce food, fiber, and other products.

Fishing

The activity of catching fish, either for commercial, recreational, or subsistence purposes.

Logging

The process of cutting down trees, removing branches and foliage, and transporting timber for processing or sale.