A. Observational studies
B. Sociological analysis
C. Statistical Comparative studies
D. None of these
Correct Answer: Statistical Comparative studies ✔
Last Updated: September 23, 2019
A. Observational studies
B. Sociological analysis
C. Statistical Comparative studies
D. None of these
Correct Answer: Statistical Comparative studies ✔
Last Updated: September 23, 2019