multiple choice questions for Objective 1

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Chapter 4

This activity contains 9 questions.

The process of selecting a number of participants for a study in such a way that they represent the larger group from which they were selected is known as

	research design.
	sampling.
	data collection.
	random assignment.

Mr. Norris is studying the effects of two innovative instructional strategies on student achievement. He randomly selected 60 students from the 1,512 students in his community college to participate in the study. These 60 students are referred to most appropriately as the

	research group.
	target population.
	accessible population.
	sample.

Mr. Gallagher is conducting a study of college freshmen in Louisiana. He has been able to compile a list of every freshman enrolled in the state supported universities, but the information on students attending private universities is not available to him. The students on his list are referred to as the

	target population.
	accessible population.
	sample.
	stratified sample.

The purpose of random sampling is to ensure

	a sufficient sample size.
	a clearly defined target population.
	representativeness of the sample.
	representation of specific subgroups in the population.

Which of the following is a basic step in selecting a sample from a population regardless of the specific technique being used?

	Identify the population
	Define the sample size
	Select a sample
	All of these

Ms. LeBlanc has defined her population and listed most of the members of that population. Why is it necessary for her to continue to identify all of the members before beginning to randomly select her sample?

	She needs the larger population.
	Some members of the population would not have an equal chance of being in the sample.
	She needs larger sample.
	Some members of the sample might not be in the population.

Which of the following is NOT a random sampling technique?

	Purposive sampling
	Stratified sampling
	Cluster sampling
	Systematic sampling

Which of the following is NOT a general rule for determining sample size?

	Select a maximum of 20 subjects for correlational research designs.
	Select a minimum of 30 subjects per group in a causal-comparative research design.
	Select about 20% of the population in a descriptive study.
	Select about 60 subjects for a two-group experimental design.

Which sample size would you recommend for a survey if the population consists of 90 subjects?

	18 (20%) subjects
	30 (30%) subjects
	45 (50%) subjects
	90 (100%) subjects

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