Hi Clara, I would just pause on that answer. I'm going to chat with Lisa about this. Biologically it makes sense for something to become toxic above a certain concentration. I think it could make sense to have the regression up to the point where...
Spearman Rank CorrelationNo need to respond. I have fully understood the process now : )
HL 2.1 Caminalcules and Evolutionary RelationshipsHi Zoe. When students get to step 3, do they not place them into order on the Caminicule Evolution table?
HL 2.1 Caminalcules and Evolutionary RelationshipsThank you for answering at the weekend - very unexpected and appreciated. I'd written notes to myself for next week depending on your responses.
Measures of VariabilityThanks Lisa - it goes up then down...
Spearman Rank CorrelationHi Sounds great. Thanks M
Getting started with an ESS extended essayYou could do a box and whisker plots for each concentration
Measures of VariabilityFor each concentration
Measures of VariabilityIf your data goes up (or down) from left to right you can use Spearman Rank Correlation Coefficient. If it goes up then down ( or down then up) you can't use that. You could do t-tests to show differences, but that's not terribly...
Spearman Rank Correlation
Clara
Thanks Zoe, yes it does make sense biologically, although all results are showing more growth than the control the difference in height goes up peaks and then decreases. The higher concentrations seedlings took longer to germinate so they have been...
Spearman Rank Correlation