An observation study is where nothing changes and you record what is seen. An experimental study you have a control group and a testable group.
The answer would be: .C. The groups in an experiment are chosen at random, but not in an observational study.
Answer:
4 units
Step-by-step explanation:
i took the test :) gl
Answer:
27.333333333333333333333333333333333333333333333333 is answer
Answer:
x=5
Step-by-step explanation:
For this question, you would go;
11 - 14 = -3
Then;
-3 ÷ 3 = -1
The answer is b) -1
:)
