lines = 'xbar R
76.3 5 
73.0 15
77.0 5 
80.0 16
72.0 18
72.7 11
78.7 5 
80.3 6 
77.7 17
77.7 6 
77.3 6 
79.3 2 
75.7 11
78.3 4 
79.3 9 
78.0 8 
83.3 9 
80.7 18
79.0 8 
74.3 4 
85.3 23
81.3 15
80.0 20
79.0 22
84.0 8 
75.0 10'
con = textConnection( lines )
DF = read.table( con, header=TRUE )
close(con)