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 vote158 views1 answer
How to source all fies from a directory in r
R
0 vote154 views5 answers
Layar names in R worldclim
R
0 vote133 views1 answer
Not displaying prints and on.exit in r
R
0 vote246 views1 answer
Change the y ticks in r plot
R
0 vote166 views1 answer
Print the names of all worksheets in r
R
0 vote229 views1 answer
Save link tweet in new column in R
R
0 vote138 views1 answer
Histogram r add line
R
2 votes140 views1 answer
Loop through list in r
R
0 vote149 views1 answer
R total line text file
R
0 vote197 views1 answer
R - remove scientific notations
R