How do I edit a text that is auto-generated on the plot?

[#1]

Specifically clicking a mean & std dev option, it generates the 2 numbers and puts it in the middle of my plot. 

These numbers are tiny like size 2. 

I would like to learn how to: 

1. go into the code script and manually edit text size and other features.

2. change the default preference if possible for larger text sizes. 

[#2]

I think you are using graph builder and adding a caption. Preferences has a caption font that controls it.

Changing the caption font.

[#3 · Accepted solution]

Another way to set the font is to right click and choose "Customize..." from the popup menu ...

... then click on "Means add ... Deviations",  then click on "Font..." and choose the size you would like to use. 

Unlike a preference change, this will only affect the current graph.

~John

[#4]

Much better!

[#5]

Thanks everyone!