A Researcher Administered a Math Test to a Group of 9th

question 5

Multiple Choice

A researcher administered a math test to a group of 9th graders in September.During the school year these students received an intensive program designed to improve their math skills.In May the math test was again given to these students and their math scores improved.A major problem in this research is that the researcher failed to control for:

• A)history
• B)maturation
• C)testing
• D)selection biases
• E)the researcher failed to control for all of these choices

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