Exam 5: Data and Epidemiology: the Link to Biostatistics

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?

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?

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.

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

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?

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

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

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.

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

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?