This is a question from a complete beginner on this matter.
In the Allen Brain Atlas website, why is that log2 values are sometimes very different even for similar z-score values? For example:
I noticed that log2 values are quite stable within a given probe, while z-score values are more stable between probes. Is this because they are normalized by different factors?
Which score would be better to use if I want to compare expression differences between genes?