Greek Letter with subscript

I’m typing a question in a Note for my Statistics class and I need to show sigma with a subscript of x bar. I’m not sure how to do that since I am very new to using CL and coding in general. Any help will be greatly appreciated.

content: “`\sigma_{\bar{x}}`”

Does that do what you want?

Yes it does. Thank you so much!

In general, if you look for how to do something in LaTeX, it transfers pretty nicely into the CL when you put the ` ` marks around a string.

Most Greek letters work (use a capital letter instead of a lowercase if you want the uppercase form of the Greek letter), and using underscores with brackets like w_{xyz} would put xyz as a subscript all attached to the w.

Can greek letters work in functions or expressions? For example, can I create a function y = 3x + `\epsilon’? I don’t think this can be done but I’d love to know.