A couple of ways, assume subjects in A2:A10 and grades in B2:B10


=AVERAGE(IF(A2:A10="Art",B2:B10))


entered with ctrl + shift & enter


or

=SUMIF(A2:A10,"Art",B2:B10)/COUNTIF(A2:A10,"Art")


since you want to be able to change subjects easily replace the word "Art"
with a cell where you put the different
subjects


=AVERAGE(IF(A2:A10=E1,B2:B10))


and


=SUMIF(A2:A10,E1,B2:B10)/COUNTIF(A2:A10,E1)


--


Regards,


Peo Sjoblom



"Nick Horn" wrote in message
...
I have a spread shett which is recording lesson observation data e.g.

Subject Grade
Art 3
Maths 1
Art 4
Maths 2
Art 2

I want to get the spreadsheet to avaerage the grades for each subject
seprately e.g. Art 2
Maths 1.5
Does anyone have any ideas what formula(s) I should use.

Many thanks

Nick Horn