big00fdotcom Posted April 6, 2019 Report Share Posted April 6, 2019 How many marks are uncertainties worth in the chemistry ia? If I were to not include them at all how many marks would I lose? If I did them incorrectly how many marks would I lose? Reply Link to post Share on other sites More sharing options...
kw0573 Posted April 6, 2019 Report Share Posted April 6, 2019 If there are no uncertainties in the data, you can only score 4/6 on Analysis. It is possible that it may affect your Evaluation marks, but unlikely. It is also possible that you obtain max 3/4 on Communication, because communication of uncertainty is a convention. If there are no uncertainties, or did not propagate them, the maximum score is 17/20. If you make mistakes in propagating uncertainties, you can still get 4/4 on Communication, but max 4/6 or 5/6 on Analysis, depending on how critical the mistake was. For example if you started with 5% uncertainty then ended with 1%, then it will be 4/6 Analysis because the propagation is clearly wrong. Uncertainties are some of the easiest marks to obtain because you just apply some formulae. In context of the final grade, 3 marks on the IA roughly translates to 1/3 of a grade boundary. There are people literally asking for regrades for 3 marks and they are hardly ever successful. Reply Link to post Share on other sites More sharing options...
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