Fred Senese
·
Dept. of Chemistry
·
Frostburg State University
Introduction to Measurements and Uncertainty
Tutorial Outline
Measurement and Uncertainty
Measurements are inherently uncertain; the last figure of a properly recorded measurement is just an estimate.
Uncertainty in Length Measurements
Uncertainty in Temperature Measurements
Uncertainty in Volume Measurements from a Graduated Cylinder
Exact Numbers
Significant Figures
are the digits in a measurement up to and including the estimated digit.
Counting Significant Figures
Moving the decimal point doesn't change the number of significant figures.
A procedure for counting significant figures.
When are zeros significant figures?
Rounding to the Correct Number of Significant Figures
Counting significant figures for a series of measurements
Copyright © 1997 by
F. Senese
senese@antoine.fsu.umd.edu
Last Revised 12/10/01.