Exam 1: Research Methods

A researcher plans a school-district-wide study to compare Methods A and B of increasing physical activity in third graders. Which of the following procedures would be MOST appropriate for selecting a sample?

Why are volunteers likely to constitute a biased sample?

The following statement describe the basic purpose, technique, or result of some research projects. -Several groups were exposed to different methods of learning the forward roll to determine which method resulted in the most efficient learning.

What is true about the null hypothesis?

Picking names out of a hat is an example of what type of sampling?

A researcher investigates the relationship between age (10 years, 12 years, and 14 years) and gender on percentage of body fat. What is (are) the independent variable(s)?

What is the lowest level of measurement required for parametric statistics?

Which of the following refers to the technical quality of a research project?

Which of the following is NOT generally considered a defining characteristic of research?

An experiment is designed to measure the effect of two different methods of presenting volleyball knowledge. The dependent variable is written test scores. Of the following variables, which would be the most important to control?

Which threat to internal validity is related to unexpected events?

What type of replication occurs when a researcher duplicates a previous study but uses a different population or situation?

What is the name given to the variable that is expected to exhibit different values as the result of subjects' being exposed to differing conditions?

What type of experiment validity could be affected by the administration of a pretest?

What does regression to the mean predict if a subject obtains an extreme score on a measurement and then is remeasured?

A researcher examines the effects of mental imagery (none, 5 minutes, 25 minutes) on shooting accuracy in novice, intermediate, and expert archers. What is (are) the confounding variable(s)?

Which threat to internal validity is related to an uneven loss of subjects from an investigation?

Which feature describes the best theories?

Which of the following is an expression of a null hypothesis?

A researcher investigates the relationship between age (10 years, 12 years, and 14 years) and gender on percent body fat. What is (are) the dependent variable(s)?