Significant Figures

Try some of these links for guidance on sig. figs. (These were obtained from Mackenzie’s Fizzics site):

http://www.ausetute.com.au/sigfig.html

http://www.chem.sc.edu/faculty/morgan/resources/sigfigs/index.html

http://www.staff.vu.edu.au/mcaonline/units/numbers/numsig.html

http://www-users.york.ac.uk/~mb55/msc/maths/sigfig.htm

The golden rule for calculations is that you can’t get a more accurate answer than the least accurate of the source data. Concentrate on sig. figs. rather than numbers after the decimal point and you will be ok.

Advanced Higher Gradient Uncertainties

The following PPT file may help you determine the uncertainty in the gradient of a straight line:

Graph Uncertainties