Comparing multiple data points. No reference value present. This is always a positive value. Less than
5%error is great.
( greatest - least )/( average )\times 100Replicate data: What is the percent difference of data set that includes 297, 3,07 and 3.11? What about 12.97, 13.07 and 13.11 ? If the reference value for
#2is 13.41 , what is the
%difference? The experimental value would be the average: