In Order to Conduct an Experiment More Efficiently a Researcher

question 45

Multiple Choice

In order to conduct an experiment more efficiently a researcher tests groups of participants in several small groups.The sizes of the groups differ because of differences in participants' availability at different times.The different sizes of the groups represent a potential

• A)intact group problem.
• B)selective subject loss problem.
• C)extraneous variable problem.
• D)experimenter effect.

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Definitions:

Stepwise Regression

Stepwise regression is a statistical method of building predictive models by sequentially adding or removing variables based solely on their statistical significance.

Multiple Regression

A procedure within statistics for modeling how various independent variables impact a single dependent variable.

Independent Variables

Variables in an experiment or model that are manipulated or selected by the researcher to determine their effect on the dependent variable.

Iterative Procedure

An iterative procedure is a process that repeats steps to achieve a desired goal or solution, often used in mathematical algorithms and problem-solving.