Fundamentals Flashcards
Accuracy in results means
The results are all close
Precise in results means
The results are precise to the true result
Dependent variable
The one you measure
Independent variable
The one you change
What is uncertainty
The range in your results divided by two - written with plus minus sign
Control variable
The one that remains the same
A categoric variable
Does not change over time ( the number or cars that are orange
A continuous variable is plotted on…
A line graph
How do you represent uncertainty on a line graph
Error bars
To get marks on a line graph question you must give
Measurements and units . Error bars . Line of best fit
Types of error
Random and systematic
A random error
Is caused by the person doing the experiment - eg parralax error
What is a systematic error
This is due to the system or apparatus used causing an error - zero error ( balance not showng zero )
