The following data represent trunk circumferences (in mm) for a random sample of 60 four-year-old apple trees at East Malling Agriculture Research Station in England

108
106
103
114
91
122
​

99
111
114
105
102
113
​

106
119
101
99
108
105
​

102
109
99
122
110
112
​

115
125
112
106
83
117
​

120
108
120
113
90
122
​

120
116
108
114
69
129
​

117
105
91
75
117
100
​

122
117
115
96
84
138
​

142
123
109
124
142
117
​


Draw a relative-frequency histogram.