I am using Mobius to test student's ability to use simple equations such as power = energy / time with numerical questions. (This is on a foundation year program.) I use two significant figures to compare their results to the correct answer. One issue is that if 500 is the correct answer, then Mobius assessment regards this as correct to one significant figure and marks it wrong. The correct answer is 5.0E2 to two significant figures. After looking at the web, this is viewed as the correct way to compute significant figures, although there is no way I am going to teach the students this. Is there any way to better compare significant figures, other than to include more digits in the random variables?
C
cmcneile
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Significant figures