01:160:161 Lecture Notes - Lecture 2: Joule, Si Base Unit, Molar Mass
Document Summary
Tells us how close a set of measurements is to the true value. Tells us how close a series of replicate measurements are to one another. Indeterminate error measure has equal probability of being too high or too low. Determinate error measure that is in the same direction, either being only too high or too low. All zeroes in between significant numbers are significant. All zeroes to the right of a significant number and decimal point are. All zeroes to the left of the left-most sig fig is never significant. Answer will have the same number of decimal places as the least precise (smallest number of decimal places) used in the calculation. Answer will have the same number of significant figures as the number with the least number of significant figures used in the calculation. Combination of operations and significant figures (6. 1 2. 752) / (2. 5 x 1. 3) = 0. 10. Cancel units until you get the unit you need.
