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 vote284 views2 answers
Insert character into string
R
9 votes404 views3 answers
R add row to dataframe
R
0 vote261 views4 answers
R - change column name
R
0 vote238 views1 answer
R dot product
R
0 vote284 views2 answers
Convert a row to a column in r
R
0 vote267 views1 answer
Error installing devtools r
R
1 vote284 views1 answer
If not i startswith R
R
-1 vote276 views1 answer
Legend in R
R
0 vote246 views5 answers
Vlookup in r dplyr
R
0 vote236 views1 answer
Split strings by space in r
R