A Statistically Significant Difference Between Two Sample Groups Is NOT

question 48

Multiple Choice

A statistically significant difference between two sample groups is NOT likely to be

• A) a reflection of differences between the populations they represent.
• B) due to chance variation within and between the sample groups.
• C) observed more than 5 percent of the time the groups are compared.
• D) observed when the two groups are very large.

Distinguish between primary and secondary research and their applications.

Explore various primary research options and their applicability to specific research questions.

Understand the use of correlation analysis in research.

Differentiate between formal and informal reports, and internal and external reports, and understand their respective utilities.

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Definitions:

Correlational Method

A statistical technique used to determine the degree to which two variables are related without inferring a cause-and-effect relationship.

Confounding Variable

An extraneous variable in an experimental design that correlates with both the dependent and independent variables, potentially leading to a false assumption of causality.

Experimental Approach

A research method involving the manipulation of variables to observe and measure the effects on subjects in a controlled setting.

Manipulation of Variable

The process in experimental research of changing one variable to determine if changes in one variable cause changes in another variable.