Describing experiments Flashcards
Where do reliable results come from?
Experiments that give you the same data
Where do valid results come from?
Reliable and from a fair test
What’s the independent variable?
The thing you change
What’s the dependent variable?
The thing you meaure
What’s the control variable?
The things you keep the same
How to improve reliability?
Repeats
What do to when asked how to make an experiment safer?
What the threat is, and how to make it safer
What are accurate results?
Results which are very close to the actual answer
What are precise results?
Results which are taken with very sensitive instruments
What’s an anomalous result?
A human error in the experiment causing strange data
Pointers for drawing a graph?
Label axis with units Dependent variable on Y axis Independent variable on X axis Takes up half the paper Line of best fit
What does it mean to evaluate a conclusion?
If the evidence from the experiment supports the conclusion and why
What to do when planning an experiment?
Dependent variable Independent Variable Method and apparatus Constant variables Repeat 3 times Whether using a control or not
What do control variables do?
Improve validity
