+Loren Smith These values don't have to be rounded, they're exact values. For example, I would generally not round a number like 12.25 to 12.3, there's no need. Also, you shouldn't round them at all if you're using them to calculate a chi-squared value, or any other calculation for that matter.
Got my IB paper 2 tomorrow! This video is helping me a lot, thanks!
Would we have to do the expected values to 3 significant figures? It's just that above you haven't!
+Loren Smith These values don't have to be rounded, they're exact values. For example, I would generally not round a number like 12.25 to 12.3, there's no need. Also, you shouldn't round them at all if you're using them to calculate a chi-squared value, or any other calculation for that matter.
Thank you! :)