AQA AS ISA Biology - line of best fit question

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andy26
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#1
Report Thread starter 8 years ago
#1
Posting here - probably more relevant
Hi

I have a quick question about my upcoming Biology AS ISA.

For every in-class practical and mock ISA I've done, my results on my graphs are best suited to a curved line of best fit and I have been told to always use a curve.

The results for this upcoming ISA, when plotted, will most likely form a straight line. Silly question but am I still expected to do something freehand or simply use a ruler for the line of best fit in, say, physics.

Thanks
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always1
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#2
Report 8 years ago
#2
Use a ruler to draw a line through as many points as possible, try and have the same amount slightly above the line as below. If its a physics isa draw the line to the axis but for biology never extrapolate beyond your points.
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