| stat.freq | R Documentation | 
By this process the variance and central measures ar found: average, medium and mode of grouped data.
stat.freq(histogram)
histogram | 
 Object create by function hist()  | 
Statistics of grouped data.
Felipe de mendiburu
polygon.freq, table.freq,
graph.freq, intervals.freq,
sturges.freq, join.freq,
ogive.freq, normal.freq 
library(agricolae)
data(growth)
grouped<-with(growth,hist(height,plot=FALSE))
measures<-stat.freq(grouped)
print(measures)
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