usernamed Posted April 11, 2015 Report Share Posted April 11, 2015 I'm typing up my biology IA, and when I looked through some examples of biology IA's online, I found that some people had this as part of their IA...I didnt really get the hang of it and I would like to know what is it?And how can I use it for my results? Reply Link to post Share on other sites More sharing options...
Baller97 Posted April 11, 2015 Report Share Posted April 11, 2015 I'm typing up my biology IA, and when I looked through some examples of biology IA's online, I found that some people had this as part of their IA...I didnt really get the hang of it and I would like to know what is it?And how can I use it for my results?It's not a requirement for Biology IA's, however it is for the other sciences such as Chemistry and Physics. Soo just don't worry about it Reply Link to post Share on other sites More sharing options...
Slovakov Posted April 11, 2015 Report Share Posted April 11, 2015 (edited) Depending on what and how you measured, your measurements are never 100% precise. They are only as precise as your apparatus/experience allows you. For example when measuring length with a ruler, the smallest unit on it is 1mm, therefore you can't give results with precision smaller than half of this unit i.e. 0.5mm. And that is your uncertainty - you then write that your result is +/- 0.5mm. You are expected to give uncertainties whenever it's possible as they give a range of possible results for a given phenomenon and allow for some random mistakes in measurements. I'm not sure if you really need it for IB Biology though.... There are a few rules when calculating uncertainties for processed data, so if you really want to include uncertainties, you can ask someone taking physics as they have this in their books.But if your results are qualitative rather than quantitive, giving uncertainties is rather pointless and you don't really ned to give them in this case. Edited April 11, 2015 by Slovakov 1 Reply Link to post Share on other sites More sharing options...
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