A Researcher Needs Your Help in Identifying the Best Statistical

question 1

Multiple Choice

A researcher needs your help in identifying the best statistical method for a research study. The researcher believes that blue-collar workers have higher cholesterol levels compared to service and white-collar workers. High levels of cholesterol can lead to heart disease and stroke. The researcher hypothesizes that controlling for race, age, and income, blue-collar workers will have higher mean cholesterol levels compared to the other two groups. Which of the following is the appropriate method to employ?

• A) ANCOVA/multiple linear regression
• B) Simple linear regression
• C) ANOVA
• D) Other method

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Definitions:

Homozygotes

Individuals having two identical alleles for a specific gene, resulting in the expression of that genetic trait.

Negative Frequency-Dependent Selection

Negative frequency-dependent selection occurs when rare genotypes have a fitness advantage simply because they are rare, helping to maintain genetic diversity within populations.

Pleiotropy

The genetic phenomenon where a single gene influences multiple phenotypic traits, demonstrating the complex nature of gene action.

Foraging Strategy

The behavioral patterns and techniques employed by animals, including humans, to find and gather food.