Keywords Flashcards
Independent variable
The variable that you change to see what happens
Dependent variable
The variable that you measure
Control variable
Factors that you need to keep the same during the experiment to ensure a fair test
Categoric variables
Variables that are described by labels
You should use a BAR CHART to show this type of data
Continuous variables
Variables that can have any numerical value.
You should use a LINE GRAPH to show the data
Discrete variables
Variables that can only be measured in whole numbers
Ordered variables
These are categoric variables that can be put into order
Reproducible
Evidence is reproducible when an investigation is planned in a way that allows other people to obtain the same results as you.
Repeatable
Evidence is repeatable when you obtain the same results using the same method and equipment.
Valid
A measurement is valid of it measures what it is supposed to be measuring so that it answers the question being asked
Accurate
A measurement is accurate when it is very close to the true value
Precise
A precise measurement is one in which there is very little spread about the mean value.
Resolution
Resolution is the smallest change in the quantity being measured
Control group
Control group are used to make sure that the dependent variable changes as a result of changing the independent variable and not for any other reason.
Range
Range is the minimum and maximum values of the dependent or independent variable
