Or if you have a non-linear relationship maybe then you could do an ANOVA just so you can say if there are any differences in the mean? I'm back on my coffee concentration which does show a nice increase in growth and then an inhibition of growth...
Spearman Rank CorrelationSo if you have non-monotic data then the best you can do is a regression analysis with a polynomial trendline (on excel) and the most stats you will have is the R2 value? We are trying out linear and polynomical trendlines in this case and (for some...
Spearman Rank CorrelationIt does - thank you so much
Data-based activity - Topic 8.2 - Urban green spacesHi Marie-Louise, Laura made this ppt but I'll have to think this through more deeply now as I'm starting my new students soon. I think it will take me a week as I've got a pile of marking at the moment.
Getting started with an ESS extended essayShould work now (hopefully). Not sure what happened - it worked when I tested it!
Data-based activity - Topic 8.2 - Urban green spacesHi Clara You are right! ANOVA will say that there are differences between the growth at different concentrations (maybe), but so what? A regression and correlation will allow you to say "as the concentration increases, the growth...
Overview of statistical tests (with links)Dear Zoe Are you working on an updated version of the EE power point for ESS? Regards Marie-Louise
Getting started with an ESS extended essayMe again. Just want to check I am on the right track. I have a number of students who have looked at mean growth of plants by changing the concentration of treatments e.g. coffee concentration or salt concentration. They all seem to have done ANOVA...
Overview of statistical tests (with links)
Clara
Hello, so if you are working out IQR ranges for results with different treatments e.g. concentration of salt do you work it out for each concentration or for the whole data?
Measures of Variability