[R] Two-way Anova

Hello, I'm trying to do a comparsion on a large scale say 10L bottle of liquid and a small scale bottle of liquid 0.5L, I have 5 different samples from each and they are measured over the space of 8 days as % viability and the % viability decreases over time. However not all 10 samples got me

[R] Mixed Models

Hello, I've run a Proc Mixed function on a set of data in SAS. The data was a result of an experiment that measured % viability over time and I wanted to compare a Large sample lets say 50L to a small sample say 5L. And compare the % viability between the 2 sizes to see if I get the same answ

[R] 'for Loop'

Hello, I'm trying to create a for loop for a data set, I have a list of results in this data set and I want to take the 1st two add them together and divide by the mean of the 1st to, then do the same for the 3rd and 4th values in the list and so on and each time return a value for the calcul

[R] Fwd: 'for Loop'

Hello, A nice guy call Jun Shen was helping me out with this, but I require a bit more help. Below is my data set or list called 'test'. I'm trying to calculate the %RSD for each pair of index and keep it in cronological order if you can imagine a 3rd column with 'date' beside index. Res