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

question 29

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)all of these choices.

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Definitions:

Mosquitoes

Flying insects known for feeding on blood, which can transmit various diseases such as malaria, dengue fever, and Zika virus.

Carnivorous Wild Animals

Wild animals that primarily consume meat as their main dietary component.

Antirabies Prophylaxis

Preventative medical treatment given to prevent rabies infection after exposure to the virus, often involving a series of vaccinations.