I think I can only analyze precision on this method, because I have only Standard deviation and relative Standard deviation is that correct or no? I am new in this filed. Thanks for help. Can anyone recommend me some links to be better in this part of lab report results and discussion .
Ana, you computed a calibration curve based on varying concentrations against a standard using AA. I believe you need to use the calculated SD from the program that calculated the least fit (shown as a result of the equation). This is a measure of precision, correct. Your first measure shows that the system may not be stable since the RDS is 10x higher than the other values. It is not clear if you have a blank for the system as well as one for the analyte. Here is a link that might be helpful:
http://www.fao.org/docrep/w7295e/w7295e09.htm
The aim is determent content potassium in different part of banana. T means for top of banana part, B means bottom part of banana and M ...medium part of banana. Error for B1 can be not good homogenize in procedure or maybe potassium for my skin...I got only this and now I have to make good lab report.Thank you Jochen Wilhelm and Joan Vaccaro . The best way for me is practice, because I am new in this field and my aim is to be good at all this things.