Science Grade 9 Chemistry:
You are doing an experiment to see if drinking coffee at breakfast improves your marks. You divide your class into 2 groups. Group A drinks coffee in the morning and Group B does not drink coffee. When the students come into class you have them write a test. You found the average mark for Group A was 75% and the average mark for Group B 90%. (6 marks)
What is the independent variable in your study?
What is the dependent variable in your study?
What is the control group in your study?
List 2 controls you should have in your study.
What is your conclusion for the study?
