Multiple Choice
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
Correct Answer:
Verified
Correct Answer:
Verified
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