When a researcher wants to perform the test of significance of differences between two percentages,each representing a separate group(sample),what is the FIRST required step?
A)Subtracts the two percentages
B)Adds the two medians of the percentages
C)Divides each of the two percentages
D)A comparison of the two percentages

Question

Quizplus · Accepted Answer

The first required step when performing a test of significance of differences between two percentages is to make a comparison of the two percentages. This can be done using statistical tests such as a chi-squared test, t-test, or z-test, depending on the type of data and assumptions made. Subtracting, adding, or dividing the two percentages is not appropriate as the goal is to determine if the difference between the two percentages is statistically significant, not to manipulate the data in any way.

When a Researcher Wants to Perform the Test of Significance