Sail E0 Webinar
Question
Nine year olds are taller than seven year olds. This is an example of a reference drawn from
Options:
A .  Vertical study
B .  Cross-sectional study
C .  Time series study
D .  Experimental study
Answer: Option B

Submit Your Solution Below and Earn Points !
Next Question

Submit Solution

Your email address will not be published. Required fields are marked *

Latest Videos

Latest Test Papers