Variables

Question 1

How should you keep an experient reliable?

Answer 1

• repeats/take an average

- remove anomalous results

Question 2

how could you make an experient more valid?

Answer 2

controlled variables 
(variables that are kept the same)

Question 3

what is an independent variable

Answer 3

the things you test or change
usually on the x axis
only one

Question 4

what are controlled variables

Answer 4

things you keep the same

can be more than one

Question 5

what is a dependent variable

Answer 5

the thing you measure

usually on the y-axis

Question 6

how should you answer a six mark experient question?

Answer 6

Change
Organism
Repeat
Measure
Method
Same

Question 7

How should you make an experient more precise?

Answer 7

smallest interval in a scale
number of decimal places
i.e. measuring heart rate - use a heart rate monitor has more decimal places