Answer: observational study
Step-by-step explanation:
The main purpose of an observational study is to describe a group of individuals or to investigate an association between two variables. We can answer questions about a population with an observational study. Hope it helps you if not sorry
Answer:
literacy rate
reasearchers know hot to read and write
The digit that is in the TENS place is 5
(D)Lucita's estimate is too high.
The price of the piano is $311.69
