Question

Paired T test is defined as

• A. Test used to assess quantitative observations before and after an intervention
• B. Test that is used when the observation are in the form of proportions (for qualitative data)
• C. Test applied when separate observations are made on individuals of two separate groups, and these need to be compared
• D. None

Answer 1

The Correct Option is A

The Paired T-test is a statistical method used when you want to compare two sets of related observations. This test is primarily utilized in situations where the data are in the form of quantitative measurements. Specifically, it assesses whether there is a significant difference between the means of two related groups. Typically, these two sets of observations are before-and-after measurements on the same individuals.

In the context of the given options, the correct explanation aligns with: "Test used to assess quantitative observations before and after an intervention."

The following example illustrates how the Paired T-test might be used:

• Scenario: A researcher wants to determine if a new teaching method has improved student scores. The scores of students are recorded before and after implementing the teaching method.
• Steps: Calculate the difference between the paired observations, determine the mean of these differences, and then apply the Paired T-test formula to assess whether the mean difference is significantly different from zero.