Calculating Weighted Average excluding blanks
 

I am attempting to calculate scores from satisfaction surveys. The issue is if someone leaves one of the three questions blank, excel turns that answer to a zero, throwing off the data.

Is there a formula for "non percentage" values to calculate weighted average without including the blank boxes?

Calculating Weighted Average excluding blanks
 

For example:

An employee has an average of:
Question 1: 8 (D44)
Question 2: 8 (E44)
Question 2: 8 (F44)

These are averaged from 6 total surveys (H44).

Calculating Weighted Average excluding blanks
 

=if(counta(D44,F44)=3,average(D44,F44),"")

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For example:

An employee has an average of:
Question 1: 8 (D44)
Question 2: 8 (E44)
Question 2: 8 (F44)

These are averaged from 6 total surveys (H44).