using an array to sum row averages

I have a dataset that has audit questions as columns and sites as rows (sample file attached).  Input looks like:

SiteName          Area1Q1      Area1Q2       Area1Q3         Area2Q1           Area2Q2      etc
a                               3                  4                      3                    4                          3
b                               2                  4                      4                    2                          3
c                               1                   1                     2                     N/A                     1

I want to return the # or % of sites that scored an average in Area1 of <2 (% of sites is preferable, but # of sites would be ok).

So, the average score for sitea in area1 is  (3+4+3)/3=3.3,   and for area2 is 4+3/2=3.5
             Average score for siteb in area1 is (2+4+4)/3=3.3,     and for area2 is 2+3/2=2.5
             Average score for sitec in area 1 is  (1+1+2)/3=1.3,    and for area2 is 1              (N/A doesn't count)

My desired output looks like this:
Area            % sites that scored on average <2             % of sites that scored on avg 2-3
1                              33%                                                               0%
2                              33%                                                            33%

We will have hundreds of sites, and there are 24 Areas.  The overall average for all sites was easy.  But I can't figure out how to code the following:

1. Computing an average of values within a row across a number of columns =AVERAGE(C3:G3), repeated for each row in the sheet
2. Summing up all of the results of step1 that are equal to <2
3. Dividing the result of step2 by the total number of rows and returning that average

I'd be happy with only steps #2-3 above (getting the Number of sites with an average score <2 instead of the % of sites is OK).

Any help appreciate.  Sample file attached.  Note that sheet "DATA" has the database, and sheet "DESIRED OUTPUT" has where the output goes.
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Saurabh Singh TeotiaCommented:
I'm assuming this is what you are looking for...

zalikAuthor Commented:
Not sure that's returning what I'm looking for, though it's getting me closer.

For Area1, calculating manually, I get 1 site that averaged <2 (site "g"  got an average of 1.8, with scores of 2, 2, 1, 2, 2).  There were 15 sites, so around 7% of sites scored <2 (1/15).  

The attached file had a mistake, which I see you caught, in that the last column is for the % of sites scoring between 2-3 (not <3, which would encompass those that scored <2).
Saurabh Singh TeotiaCommented:
Their you go..I added an extra column to first calculate the site average basis area wise and then giving you the desired results what you were looking for...

Rory ArchibaldCommented:
One way without helper columns:
D4: =SUM(--(IFERROR(SUBTOTAL(1,OFFSET(DATA!$C$3:$G$17,ROW(DATA!$C$3:$G$17)-MIN(ROW(DATA!$C$3:$G$17)),0,1)),"")<2))/COUNTA(DATA!$A$3:$A$17)

E4: =SUM(--(IFERROR(SUBTOTAL(1,OFFSET(DATA!$C$3:$G$17,ROW(DATA!$C$3:$G$17)-MIN(ROW(DATA!$C$3:$G$17)),0,1)),"")<3))/COUNTA(DATA!$A$3:$A$17)-D4

Both of these must be array-entered with Ctrl+Shift+Enter. You need to adjust the ranges for the other areas.

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