A small sample size is better than a large one.
If the results are reproducible and repeatable then they are reliable
if the results are from an independent company then they are not biased.
What variables are there in an investigation?
Control variables, independent variables and dependent variables.
Control variables, independent variables and experiment variables.
Controlled assessment variables
A random error can be caused by humans.
An anomalous result is still used in the results
What is a zero error?
It is an error that happens when the equipment is not zeroed properly.
It is an error that occurs when the equipment only shows zero.
It is an error that occurs when the equipment breaks.
Line graphs are used for non-continuous results
Sometimes conclusions might show that there is a relationship between two variables but that doesn't mean that a change in one variable causes the change in the other.
When you do an experiment you have a group that has nothing done to them, why?
They are a control group to make sure the results are correct.
They are just there
They are lazy and like to take part in experiments
