R mean by group

d <- read.table(text=
'Name     Month  Rate1     Rate2
Aira       1      12        23
Aira       2      18        73
Aira       3      19        45
Ben        1      53        19
Ben        2      22        87
Ben        3      19        45
Cat        1      22        87
Cat        2      67        43
Cat        3      45        32', header=TRUE)

aggregate(d[, 3:4], list(d$Name), mean)

  Group.1    Rate1    Rate2
1    Aira 16.33333 47.00000
2     Ben 31.33333 50.33333
3     Cat 44.66667 54.00000

Source: stackoverflow.com

Similar codes

0 vote349 views1 answer
R - reorder columns in data frame
R
0 vote297 views5 answers
Vlookup in r dplyr
R
1 vote366 views1 answer
If not i startswith R
R
0 vote361 views1 answer
Norm,s,inv in r
R
5 votes543 views2 answers
Use packages in r
R
1 vote345 views1 answer
Nls in r
R
0 vote365 views1 answer
R select column names starting with
R
0 vote343 views1 answer
R function to get class of all columns
R
0 vote349 views2 answers
Modulo in r
R
1 vote372 views1 answer
Dplyr colnames r
R