lala18 Posted March 6, 2011 Report Share Posted March 6, 2011 Does anyone know if we need to have percent uncertainties in bio labs? I know we had to in chem, but I am not sure about bio. Reply Link to post Share on other sites More sharing options...
Keel Posted March 7, 2011 Report Share Posted March 7, 2011 Yes, you would need to calculate the total uncertainy in your DCP so you can comment on the accuracy of the experiment in you Conclusion and Evalucation (CE). Reply Link to post Share on other sites More sharing options...
kiwi.at.heart Posted March 7, 2011 Report Share Posted March 7, 2011 no, you don't need to in biology. All you need to do is show the uncertainty of the equipment you used in the results table and that's it. So much more easier than chem labs Reply Link to post Share on other sites More sharing options...
Keel Posted March 7, 2011 Report Share Posted March 7, 2011 no, you don't need to in biology. All you need to do is show the uncertainty of the equipment you used in the results table and that's it. So much more easier than chem labs Oh really? I asked my friend who takes bio and she said you have to do it for the reason I gave. Strange... Maybe our school's misinterpreted the requirements. (Or my friend's just rubbish at bio) Reply Link to post Share on other sites More sharing options...
ILM Posted March 7, 2011 Report Share Posted March 7, 2011 Really i am not sure about it, but i usually try to put them into my lab. But i recommend to ask your teacher, especially if he has a past experience in IB. Reply Link to post Share on other sites More sharing options...
nametaken Posted March 7, 2011 Report Share Posted March 7, 2011 Am not too sure about it either. But that's because I don't do Bio, only Chemistry. I'd recommend what Ibrahim has already suggested. Ask your teacher. Reply Link to post Share on other sites More sharing options...
Proletariat Posted March 22, 2011 Report Share Posted March 22, 2011 You definitely should be including uncertainties for your data results in Bio labs. I just got my labs back today for final proofreading before submission; I have the rubric in front of me right now, and my teacher removed one point from the "Presenting processed data" section of DCP because, although my graph did have error bars, I did not explain the methodology by which I arrived at those values (stan. dev/2). IB markers don't always agree on things like this though; if you want to roll the dice it's up to you. Reply Link to post Share on other sites More sharing options...
Guest Red XII Posted May 10, 2011 Report Share Posted May 10, 2011 It's better to put them in even if you don't need them (as they're relatively simple to do) than to be penalized for not having them. Having them even if you don't need them will make it look more professional and might give the grader a better overall opinion of your work. Reply Link to post Share on other sites More sharing options...
larry Posted May 30, 2011 Report Share Posted May 30, 2011 *percentage uncertainties Reply Link to post Share on other sites More sharing options...
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