what does X with bar over it mean or cl X in analysis?

Question

Update:

X is a set. The bar over it seems to mean the same as clX in analysis, but what does that mean?

Answer 1

Xbar usually indicates the average value for the set of data. The mean in statistics. I don't know what you mean by cl X and I definitely do not know what type of analysis you are doing because you did not say, so cannot really answer the question in a meaningful way. Chemical analysis, data analysis, statistical analysis, or what?

Answer 2

x-bar.....

The symbol x-bar, that is, an "x" with a line over it, refers to the average of x values.

Answer 3

Ask Walter White