If a Data Set Has 16 Values and a Standard

question 12

Multiple Choice

If a data set has 16 values and a standard deviation 9.4, then the variance is ________.

• A) 88.4
• B) 2.3
• C) 22.1
• D) 37.6

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Definitions:

Independent Variable

In experimental studies, this is the variable that the researcher alters to examine its impact on the dependent variable.

Dependent Variable

The variable in an experiment that is expected to change in response to manipulations of the independent variable.

Confound

A variable that influences both the dependent and independent variables in a study, potentially skewing results and making it difficult to determine causality.

Institutional Review Board

A committee that reviews and approves research protocols to ensure ethical standards are maintained in studies involving human participants.