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 vote118 views1 answer
Kable thousand mark
R
0 vote106 views1 answer
Infinite in r
R
3 votes213 views1 answer
Normalization in r
R
0 vote102 views1 answer
Grid.arrange
R
2 votes155 views3 answers
How to use recursion in r
R
1 vote125 views1 answer
R dataframe filter endswith
R
0 vote115 views1 answer
Number of days in a data set in r
R
0 vote125 views1 answer
Set row names in r
R
2 votes160 views3 answers
Combine columns in r
R
0 vote114 views1 answer
Color code in r
R