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Correct use of the following functions: describeBy, statsBy and stat.desc

I am using R 3.2.0 and have used the function successfully aggregate

, but it gives minimal statistics, tapply

gives more than the aggregate function, but the aggregate statistics are limited. For the following data from 4 different groups ns can anyone show me how to use the following functions: describeBy

, statsBy

and stat.desc

? Below is the data and wrong syntax for the above functions that I have used.

data <- c(62, 60, 63, 59, 63, 67, 71, 64, 65, 66, 68, 66, 71, 67, 68, 68, 56, 62, 60, 61, 63, 64, 63, 59)
grp <- factor(rep(LETTERS[1:4], c(4,6,6,8)))
df <- data.frame(group=grp, dt=data)
describeBy(data, df$dt, df$group, mean,median,min,max,sd)
statsBy(df,mean,median,min,max,sd)
stat.desc(df,basic=F)
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1 answer 


library(DescTools)  # not asked for, but better
Desc(df, plot = T)

library(psych)
describeBy(df, df$group)
# statsBy tries to find correlations, but you have only 1 numerical variable here.

library(doBy)
library(pastecs)
summaryBy(dt ~ group, data = df, FUN = stat.desc)


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