As a high-school principal,Dr.Ilka is interested in whether the fifth-grade students have better math skills than the third- and first-graders.To answer her question she presents children in each of the three grades with the same math test and then compares the scores.Dr.Ilka's study utilized a ________ design.
A) cross-sectional
B) longitudinal
C) time-lag
D) correlational

Question

Quizplus · Accepted Answer

A cross-sectional design compares different groups of individuals at the same time point. In this study, Dr. Ilka compared the math scores of students in different grades (fifth, third, and first) at the same time point. Therefore, the study utilized a cross-sectional design. The other options (longitudinal, time-lag, and correlational) would not be appropriate for this type of study.

As a High-School Principal,Dr