H201 Measurements Flashcards
Name the all the base quantities
Kilogram, Metre, Second, Kelvin, Ampere, Mole, Candela
Define random error
A random error occurs when the measured values are scattered about the true value with no fixed pattern.
How to reduce random errors?
Can reduce by averaging the values
What is a systematic error?
A systematic error occurs when the measured values are consistently larger or smaller than the true value.
How to eliminate systematic values?
Checking for zero errors, calibrating instruments properly, perfect experimental procedures
Define accuracy
Accuracy is how close the measured reading is to the true value.
How to determine precision of a set of readings.
Precision of a set of readings is determined by the range in the values.
How to determine precision of an instrument?
Precision of an instrument is determined by the size of the smallest division.
