I measure the change in heart rate for different groups of subjects over time (I take 13 heart rate readings and each group contains at least 6 subjects). Let's say I have 5 groups including one or two groups to which I want to compare the other groups. I mean for every reading of the 13, I want to find if the group mean is statistically significantly different from a certain control group/s.
I also want to draw a graph representing the change in heart rate over time and showing which points differ from the assigned group/s.
Any help with that, please?