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ok thank you

Hi again, Below is the query that was put to me about my original analysis, with the help and suggestions you have given me I have redone the ANOVA test and my overall result has not changed, do you think I have answered the query correctly? Thanks "An analysis of variance showed that the...

Thanks again for your help

Hi I have a few more questions if that is ok? Here is my residual plot for my data. When I do tests for normality (kolmogorov & Shapiro-Wilk) 4 of my groups have a p<0.05, so from that my data is not normally distributed. Even when I transform the data it does not help. Is it possible to do an...

Thank you again for all your help, it is very much appreciated. Hopefully I will not need to come back for more!!

So just to be sure I have this right, for example my steering wheel in vehicle 1, I should subtract the mean of all the locations in vehicle 1 from the steering wheel? and follow on and do this for all my locations? When I first did the ANOVA I had to transform my data (lg10) because it was...

Yes that is correct, it was not the main point of my study but something extra that I thought would be of interest.

Hi, Sorry for the confusion I have probably not been very clear! I grouped all the steering wheels together (20 in total from all the different vehicles), all the door handles together (20 in total), all the central consoles together (20 in total) and so on, and then compared each of these...

Hi thank you for your response and solution, and actually I am just really interested in the differences between the vehicles. If I subtract the mean like you suggest a lot of my values will end up being negative, is this a problem. Apologies for my statistical ignorance! Thank you

Hi, I am trying to determine which is the correct test to use for my research. Briefly, I am carrying out forensic research where I am measuring the quantity of DNA in different locations in peoples vehicles, I selected the same 5 locations around the driver area of 20 different vehicles...