2 replies to this topic

[lanthanoider]

Hi guys,

i would like to ask about error bars...which never fail to make my brain go error. Well, i'm doing my physics IA on bouncing and i got these data points:



i intend to make a mass vs. change in momentum graph, i have calculated both absolute and relative uncertainty using error propagation rules. You may want to ignore the velocity in the image, it was just there to calculate things, but not included in the graph i'd like to make. But now.......how should i do the error bars? If i plot the data points, they will be linear. If i just took the absolute errors, the error bars are barely visible. if i took the relative errors, one error bar would be so huge while the other would be so small to be seen. Now, which one should I do? or are there any other methods to do these cursed error bars?

please help!!! thanks!  

[Desy Glau]

absolute errors. in my graphs I could hardly see my error bars too but perhaps that's something positive to comment on for the CE part

[lanthanoider]

so it's okay that the error bars are not seen? well yeah, havent thought about talking about "too small error bars" yet