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 vote246 views3 answers
Read xlsx in r
R
12 votes324 views5 answers
Regex examples
R
0 vote298 views1 answer
Round multiple columns in r
R
4 votes319 views1 answer
Correlation matrix in r
R
1 vote260 views1 answer
To numeric in r
R
0 vote252 views1 answer
Base R change axis line width
R
2 votes266 views2 answers
Read excel in r
R
1 vote245 views1 answer
Variable assignment in r
R
1 vote231 views1 answer
R calculate for bias
R
0 vote243 views1 answer
Visualizing missing values in r
R