Auto check calculating the Average

Question

I do not know how to approach an issue with my form, so any help or quide will be appreciate very much!
For a Performance Form I have 5 sections for the managers to fill in.
Every section includes an Assessment drop down list with 5 items to select from.
Items for DDList (Named:Assessment):
Outstanding
Exceeds Expectations
Meets Expectations
Needs Improvement
Does Not Meet Expectations
Final at the end of the form I have a section named
OVERALL SUMMARY OF PERFORMANCE with 5 check boxes named:
Outstanding
Exceeds Expectations
Meets Expectations
Needs Improvement
Does Not Meet Expectations
Is it possible with a script(Calculating the average?), AUTO to check(one of the check boxes for the Overall sum of performance?
THANK YOU
   

Answer 1

Hi Niall, I took your advise form your last sample cindle you have send me, I am close but still I have a problem at the end of the line!
Here what I have till now:
On change event for the Area1 the script below:
switch 
(xfa.event.newText){
case 
"Outstanding":
NumericField1.rawValue
= "5";
break 
case 
"Exceeds expectations":
NumericField2.rawValue
= "4"; 
break 
case 
"Meets expectations":
NumericField3.rawValue
= "3";
break 
case 
"Needs improvement":
NumericField4.rawValue
= "2";
break 
case 
"Does not meet expectations":
NumericField5.rawValue
= "1";
break 
For a NumericField1(Score for Outstanding) on Calculate event the script:
var  vScore=0 ;  
for  (var i=0; i<5; i++){
if  (xfa.resolveNode("optionA[" + i + "]").rawValue=="5")vScore
+=xfa.resolveNode("optionA[" + i + "]").rawValue;}
NumericField1.rawValue= vScore ;
This I am getting(for NumericField1) is for example select Outstanding for all DDL is:55555 than 25 which is the desire!
How I can make it work, where is my mistake?
Thanks Niall