Research Design

Which of the following best describes a research design?

• a. It serves as a framework for the literature review and answering the research questions. leading to valid inferences about the stated problem.

• b. It is the overall strategy that you choose to integrate while planning the research proposal.

• c. It makes the conclusion valid because it takes into consideration all the assumptions that went into deriving the various inferences.

• d. It ensures that appropriate data will be obtained that permits an objective analysis,

How many tests do homogeneous experimental units be subjected to the same treatment under similar conditions?

• a. at least one replicate

• b. minimum of two replicates

• c. minimum of three replicates

• d. multiple times 3

Anna thinks that if people are exposed to ultraviolet light then they are more likely to get skin cancer. She designs an experiment wherein sample A consisted of people who were exposed to ultraviolet light and sample B was not. Which is the independent variable in the problem?

• a. skin cancer

• b. samples A and B

• c. exposure to ultraviolet rays

• d. people who are exposed to ultraviolet light

Justin B. believes that the temperature lowering during the fall months is what causes the color of the leaves to change. He set up an experiment wherein he placed some plants in 80 degrees rooms and some in 60-degree rooms. He then observed the color of the leaves for a total of 1 month. At the end of the month, Justin observed that ¾ of the plants in the 60-degree temperature had been to change colors and only ¼ of the plants in the 80-degree temperature began to change colors. What is the dependent variable in the problem?

• a. the changing colors of the leaves

• b. temperature lowering during the fall months

• c. ¾ of the plants placed in the 60-degrees temperature

• d. ¼ of the plants placed in the 80-degrees temperature

A researcher plants three plots of flower seeds. He weeds and waters the first plot every day. He weeds and waters the second plot every other day. He leaves the third plot alone. After 12 weeks, the researcher measures the height of each flower. What is the role of the plots of flowers in the experiment?

• a. control group

• b. experimental units

• c. dependent variable

• d. independent variables

This means planning a set of procedures to investigate a relationship between variables.

• Research Design

• Research Study

• Research Paper

• Research Proposal

________ is the variable you think is the cause, while a/an ______ is the effect.

• Dependent-Independent

• Independent-Dependent

• Control-experimental

• Experimental-Control

A treatment group, also known as a/an ____________________, receives the treatment whose effect researchers wish to study.

• Control group

• Extraneous group

• Experimental group

• Ungroup

This refers to the balancing, grouping, and blocking of experimental units so that the units within each block are relatively homogeneous.

• Control group

• Uncontrol

• Local control

• Speific control

This group receives no treatment in the experiment.

• Control

• Uncontrol

• Local Control

• Specific control