# Mat 540 Chapter 3.1

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Chapter 3.1 &#61692; Measurement: a quantity that has both a number and a unit. &#61692; Scientific Notation: a coefficient and 10 raised to a power. The coefficient must always be greater to or equal to one and less than ten. &#61692; Accuracy: measure of how close a measurement comes to the actual value of whatever is measured. &#61692; Precision: measure of how close a series of measurements are to one another. &#61692; Accepted Value: the correct value based on reliable references &#61692; Experimental Value: the value measured in the lab. &#61692; Error: o Error = experimental value – accepted value &#61692; Percent error: o Percent Error = |error| x 100% Accepted value &#61692; Significant Figures: all of the digits that are known, plus a last digit that is estimated. o…show more content…
figs. Because calculated answers often depend on the # of sig. figs. In the values used in the calculation. Rules For Sig. Figs: 1. All non zero digits are significant &#61664; 1466 = 4 sig figs 2. Zeros: o Zeros between non zero digits are significant &#61664; 1048 = 4 sig