Question 1

The nurse is preparing to perform research about patient satisfaction for healthcare in a clinical setting. Which descriptive statistic does the nurse recognize as the most important variable?

Accepted Answer

Patient's gender is often considered an important variable in patient satisfaction research as it can influence healthcare experiences and perceptions.

Question 2

The nurse is sorting information for a clinical unit study into levels of measurement. Which question is anticipated to provide nominal measurement variables?

Accepted Answer

C

Question 3

The nurse is gathering evaluation information using a scale with responses from 1 (excellent) to 5 (very poor). Which characteristic of the scale is correct?

Accepted Answer

The scale provides an ordinal level of measurement, which indicates a ranking or order (high to low), but does not assume equal intervals between levels.

Question 4

The nurse is planning to statistically measure if a specific change in staffing has changed the data related to patient satisfaction. Which action by the nurse is helpful in determining if the change has an impact?

Accepted Answer

Determining if the data suggests rejection of the null hypothesis is a key step in statistical analysis to assess if the staffing change has impacted patient satisfaction.

Question 5

The public health nurse is determining the incidence rate of influenza in a specific county for a period of four months. Which calculation yields correct information?

Accepted Answer

The incidence rate is calculated by dividing the number of new cases by the population at risk during a specific time period.

Question 6

Researchers can convert variables from interval or ratio levels of measurement to the lower levels of ordinal or nominal but cannot change data collected at the ordinal or nominal levels to interval or ratio.

Accepted Answer

Variables measured at higher levels (interval or ratio) can be simplified to lower levels (ordinal or nominal), but the reverse is not possible because lower levels lack the necessary quantitative information.

Question 7

-A Type II error will occur if the null hypothesis was true and instead of retaining the null, the researchers reject it.

Accepted Answer

A Type II error occurs when the null hypothesis is false, but the researchers fail to reject it. Rejecting a true null hypothesis is a Type I error.

Question 8

A prevalence rate refers to the proportion of people in a population who have a particular event or disease at a certain point in time or over a certain period of time.

Accepted Answer

Prevalence rate measures how widespread a disease or event is within a population at a specific time or over a specified period.

Question 9

If a variable implies a rank or order, then the variable is considered _______ level.

Accepted Answer

The answer of If a variable implies a rank or...

Question 10

With ___________ statistics, researchers are extrapolating the results of a study from a carefully selected sample to the entire population of interest.

Accepted Answer

The answer of With ___________ statistics, researchers are extrapolating the...

Quiz 5: Data and Epidemiology: the Link to Biostatistics