process of science

Question 1

what is a controlled experiment?

Answer 1

• When a scientists assigns subjects to tests, control groups
• scientists manipulate one variable

Question 2

What is an observational study?

Answer 2

When subjects assign themselves to test
scientist does not manipulate variable

Question 3

Why are observational studies important?

Answer 3

They don’t give moral dilemma’s

Question 4

What is causation ?

Answer 4

-causation indicates that one event is the result of the occurrence of the other event

-one variable causes another to change which means one variable is dependent on another.

ex: as weather gets hot, people experience more sunburn

Question 5

True or false?
Observational studies can only tell us about correlation, not cause of result

Answer 5

True

Question 6

What is correlation?

Answer 6

The change in your experimental variable is related to your outcome.

ex: the more a student studies the higher the exam grade will be

Question 7

what does an observational study have?

Answer 7

Large sample size
no moral dilemmas
can only tell us about correlation

Question 8

a controlled experiment is..

Answer 8

more reliable
-subjects randomly assigned to tests or control group

can tell us about the cause of result
-the only difference between test and control groups is the independent variable

Question 9

What is cause

Answer 9

the change in your experimental variable directly affects your outcome