[TABLE="class: grid, width: 500, align: center"]
<tbody>[TR]
[TD="align: center"][/TD]
[TD="align: center"]A[/TD]
[TD="align: center"]B[/TD]
[TD="align: center"]C[/TD]
[TD="align: center"]D[/TD]
[TD="align: center"]E[/TD]
[/TR]
[TR]
[TD="align: center"]1[/TD]
[TD="align: center"]Branch[/TD]
[TD="align: center"]FICO Score[/TD]
[TD="align: center"][/TD]
[TD="align: center"]Branch[/TD]
[TD="align: center"]Avg FICO Score[/TD]
[/TR]
[TR]
[TD="align: center"]2[/TD]
[TD="align: center"]A[/TD]
[TD="align: center"]750[/TD]
[TD="align: center"][/TD]
[TD="align: center"]A[/TD]
[TD="align: center"][/TD]
[/TR]
[TR]
[TD="align: center"]3[/TD]
[TD="align: center"]A[/TD]
[TD="align: center"]801[/TD]
[TD="align: center"][/TD]
[TD="align: center"]B[/TD]
[TD="align: center"][/TD]
[/TR]
[TR]
[TD="align: center"]4[/TD]
[TD="align: center"]B[/TD]
[TD="align: center"]699[/TD]
[TD="align: center"][/TD]
[TD="align: center"]C[/TD]
[TD="align: center"][/TD]
[/TR]
[TR]
[TD="align: center"]5[/TD]
[TD="align: center"]B[/TD]
[TD="align: center"]658[/TD]
[TD="align: center"][/TD]
[TD="align: center"][/TD]
[TD="align: center"][/TD]
[/TR]
[TR]
[TD="align: center"]6[/TD]
[TD="align: center"]B[/TD]
[TD="align: center"]776[/TD]
[TD="align: center"][/TD]
[TD="align: center"][/TD]
[TD="align: center"][/TD]
[/TR]
[TR]
[TD="align: center"]7[/TD]
[TD="align: center"]C[/TD]
[TD="align: center"]591[/TD]
[TD="align: center"][/TD]
[TD="align: center"][/TD]
[TD="align: center"][/TD]
[/TR]
[TR]
[TD="align: center"]8[/TD]
[TD="align: center"]C[/TD]
[TD="align: center"]801[/TD]
[TD="align: center"][/TD]
[TD="align: center"][/TD]
[TD][/TD]
[/TR]
</tbody>[/TABLE]
In cell E2; =AVERAGEIF(A:A,D2,B:B)
Copy this down to cell E4.