Unit 1/5- Experimental Desing

Question 1

what is the definition of variable?

Answer 1

a variable is something that can be changed in an experiment

Question 2

what is an independent variable?

Answer 2

a variable that the researchers are changing on purpose

Question 3

what is a dependent variable?

Answer 3

the variable that is affected by the change in the independent variable

Question 4

which axis does the independent variable usually belong on?

Answer 4

the x axis

Question 5

which axis does the dependent variable one usually belong on?

Answer 5

the y axis

Question 6

give some characteristics that a strong hypothesis should be;

Answer 6

-testable
-explanatory-
specific-
-preferably in the IF___THEN____BECAUSE format

Question 7

why is a control group so important?

Answer 7

a control group provides a base line for the observations being made on the experimental group

Question 8

what graph styles are usually used for the comparison of control group and experimental group?

Answer 8

bar graphs and line graphs are typically used

Question 9

what is a control group

Answer 9

a group in the experiment which a variable is not being tested,

Question 10

what is an experimental group

Answer 10

the group that is having their independent variable changed