average data by referred cell

deli

New Member
Joined
Mar 7, 2011
Messages
4
i want to average the data from the cell but referred to the number of group from different cell like below

group_no value
1 20
1 23
1 23
1 21
1 22
2 24
2 25
2 27
2 29

i want the answer in continuous of one cell
i try this IF(A1:A9=1,B1:B9)), but it will only give the answer for group 1, i have about hundred of group no to handle.
kindly help me please.
tq
 

Excel Facts

Whats the difference between CONCAT and CONCATENATE?
The newer CONCAT function can reference a range of cells. =CONCATENATE(A1,A2,A3,A4,A5) becomes =CONCAT(A1:A5)

deli

New Member
Joined
Mar 7, 2011
Messages
4
actually i want the continuous answer in column c,
means the answer i can put besides the data,
i need the command that can give continues calculate the average for a different group no but still in column c
 

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