MODULE 1: PRACTIAL SKILLS Flashcards
What is a homogeneous equation
Both sides have same base units
Independentvar
CHANGE ITA
Dependent var
MEASURE IT (y axis)
Error of measurement
Different between true value and calculated value
Random error
When measuring, any measurement error unpredictable
Systematic error
When measurements are significantly different from true value, means human error somewhere
Accuracy vs precision
Accuracy gets a good value, precision is how different the measurements are
What affects uncertainty
Precision in repeated readings
What is uncertainty
Range which expected value lies
What is absolute uncertainty
Approx half the range of values
When multiplying/div uncertainties?
Add percentage uncertainty of each
When adding/sub uncertainty
Add the absolute uncertainty (normal)
Raising to uncertainty power?
Multiply PERCENTAGE uncertainty by power
How to find percentage uncertainty in graph
WALOBF grad - LOBF grad all divided by LOBF grad
Formula for percentage uncertainty
abs unc / value
ABSOLUTE UNCERTAINTY IS ALWAYS +-
