Quiz #1

1.

1 point

In a study with the following hypothesis, "Powered tootbrushes will remove more extrinsic stain than a manual toothbrush," what is the independent variable?

Powered toothbrush

Manual toothbrush

Extrinsic stain

Fluoridated toothpaste

2.

1 point

A pilot study may be useful and necessary prior to conducting further research. This is true because:

the more money you spend, the more likely the results will be accurate.

revisions can be made, which may obtain results with a higher degree of accuracy.

when working with a control group and an experimental group, you never know what type of subjects you'll get.

it will help determine the statistical test that will be ran on the results.

3.

1 point

Which of the following is an adequate null hypothesis?

Smoking is important in the development of cancer.

There is a statistically significant direct relationship between cancer and smoking.

There is a statisticlly negative relationship between smoking and cancer.

There is no statistically significant difference in cancer rates between smokers and non-smokers.

4.

1 point

Bias, unintentional negligance, or disagreement about the meaning of the results does not consititute misconduct.

True

False

5.

1 point

Which of the following is the most important reason to evaluate professional literature?

To satisfy continuing education requirement.

To facilitate reports to professional colleagues.

To enable the oral care provider to make decisions concerning patient care.

It is not necessary if the artice appears in a peer-reviewed journal.

6.

1 point

The independent variable is:

the factor thought to change the dependent variable.

the degree to which the results can apply to real world situations.

the measure thought to change due to manipulation of the dependent variable.

uncontrolled, unrelated factor that influences the dependent variable.

7.

1 point

The Institutional Review Board, IRB, has many responsibilities. What are some of them? Three are listed here!

To serve as a team of righteous people, to intimidate principal investigators into gathering informed consent from examiners and presenters conducting the study.

To ensure the subjects are safe, respected, and protected during the study.

To follow steps to protect the institution against lawsuits.

To meet regularly to confirm all researchers are following their rights and responsibilities.

To help make sure the results won't be flawed, specifically because the study was ethically unsound.

8.

1 point

A study was conducted to determine which polishing agent is most effective in removing plaque. The polishing agent is the ____________ variable.

dependent

independent

extraneous

research

9.

1 point

A study was conducted to determine which polishing agent is most effective in removing plaque. Plaque is considered to be the ______________ variable.

dependent

independent

extraneous

research

10.

1 point

All the following are purposes of a research proposal except one. Which one is the exception?

Communicate the researcher's intent.

Plan the research process efficiently, by guiding the researcher through a set of procedures.

Produce a change in the dependent variable by manipulating the independent variable.

Provide a basis by which the value of the intended research can be evaluated.

11.

1 point

The number of new cases of a disease over a period of time is called:

incidence.

prevalence.

rate.

significance.