A researcher analyzes scores from two studies in which patients' temperatures were measured after antipyretic medications are given.One study measures temperatures in centigrade and the other in Fahrenheit.The researcher will
A) calculate standard deviation measures for each study using their scale values.
B) compile all data regardless of scale and calculate measures of central tendency.
C) determine a Z-score and then calculate measures of central tendency.
D) realize that studies using different measures cannot be compared.

Question

Quizplus · Accepted Answer

When study results use different scales to report data,it is necessary to standardize the scores into a more general meaning.This standardized score is a Z-score.Standard deviation measures are used to assess the range of scores within a data set,but are not useful when analyzing data from two data sets.Compiling all data regardless of scale will not allow accurate comparison and analysis of the data.Comparing data from studies with different scales of measurement does not yield meaningful data.

A Researcher Analyzes Scores from Two Studies in Which Patients