|Amount of Substance||Mole||mol|
All derived units can be defined in terms of SI base units. The kilogram is the only base unit not based on a universal constant.
Experimental error can be random or systematic.
Random errors can be environmental or in reading errors
Systematic errors lead to consistently incorrect results
Poor experimental design
A measurement is repeatable if the experiment gives consistent results
A measurement is reproducible if it is repeatable using different techniques in different labs
A measurement is accurate if it is close to the true value
A measurement is precise if it gives a small range of answers
The resolution of a measurement device is the smallest increment it can measure
When adding or subtracting quantities, you should add their absolute uncertainties
When multiplying quantities, you should add their percentage uncertainties
Independent variable (cause) on x-axis
Dependent variable (effect) on y-axis
Uncertainty is \(\pm\) the greatest difference between the best fit and two worst fit lines