Conditional display in textbox based on calculated value

Question

Hello,
I have radio buttons that each have a numeric value. For example A=1 B=2 C=0. In the example below, the total equals 5.
The sum is displayed at the bottom of the document and is passed to another text box:
Instead of "5" being displayed in the text box on the right, it needs to display a word "Mastery" like this:
The word displayed is based on the totals via this range:
1 to 2 = "Acquiring"
3 to 4 = "Practicing"
5 to 6 = "Mastery"
The script I used to pass the value from the left to the right text box in the graphic above is:
// name for the text box field;
var cTextBox = "Firm-Wide Talent Strategy Knowledge - Totals";
// get the value of the field with the name in cTextBox;
var sTextBox = this.getField(cTextBox).value;
// set the value of this field;
event.value = sTextBox;
What would I need to add to this script to display one of the words, such as "Mastery" above?
I'm a complete neophyte to scripting. I found the script above online and somehow got it to work.
Thank you all very much for any help or pointers you can provide.
Best Regards,
Chris

Answer 1

Hi try67,
Thank you so much for your help. Your code has brought me one step closer, I would never have gotten even this far without it!
Initially, it was giving me and error, so I added a ")" and now it does display "Mastery", but I cannot get it to display the other two ("Acquiring" and "Practicing"), it just displays a blank space but does not give me an error.  I tried to fix it on my own by searching for some help, so I found and started playing around with jsbeautifier.org and JSLint. However, since I really don't know much about coding or syntax I hope these were not harmful. So now the code looks like this:
// name for the text box field;
var cTextBox = "Firm-Wide Talent Strategy Knowledge - Totals";
// get the value of the field with the name in cTextBox;
var sTextBox = +this.getField(cTextBox).value;
if (sTextBox >= 1 && sTextBox <= 2) {
    event.value = "Acquiring";
if (sTextBox >= 3 && sTextBox <= 4) {
    event.value = "Practicing";
if (sTextBox >= 5 && sTextBox <= 6) {
    event.value = "Mastery";
} else {
    event.value = "";
Do you know what I might be missing that prevents "Acquiring" and "Practicing" from displaying? 
Thank you so much again for your help,
Chris