3444018892 - 1 Representing & Manipulating Data...

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Unformatted text preview: 1 Representing & Manipulating Data 10/19/2008 2 Today's Menu- Data Handling- Significant Figures- Counting Rules- Fundamental Terms 3 4 5 6 7 General Notes- No physical measurement is ever completely free of experimental error or uncertainty .- The effective use of any scientific data depends on knowing the degree of uncertainty associated with the data.- Determining this uncertainty often is neither routine nor easy.- It is common to spend more time evaluating the data than it took to acquire them.- Don’t seek a greater degree of uncertainty than is necessary to answer the question at hand. 8 Significant Figures • The rule used by most scientists is to include all digits that are known with certainty plus the first uncertain digit. • When values are reported with the proper number of significant figures, we know something of the quality of the measurements. 9 10 11 Counting Rules • There are two different types of zeros : 1- Those that are regular digits, which must be treated the same as any other digit.be treated the same as any other digit....
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This note was uploaded on 03/24/2011 for the course CHEM 323 taught by Professor Basimali during the Fall '09 term at King Fahd University of Petroleum & Minerals.

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3444018892 - 1 Representing & Manipulating Data...

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