Classify the lengths into 7 equally wide class.
Draw a histogram of the classified results
Actual lower limit Actual upper limit Frequency Relative frequency Cumulative frequency
Lengths
122
135
113
122
123
121
124
123
117
139
129
132
127
115
134
125
127
122
121
135
119
120
121
113
124
119
129
140
125
139
136
142
135
115
125
141
119
115
127
113
120
112
122
135
132
131
138
116
135
132
135
115
137
114
123
114
117
128
131
126
119
112
125
113
127
130
140
114
139
125
130
124
131
116
123
125
142
118
141
138
116
137
123
136
134
136
137
118
117
137
124
117
133
119
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131
135
129
139
134
138
140
112
139
136
112
132
127
140
132
135
126
138
134
125
112
120
135
130
136
118
136
119
127
115
127
135
123
134
118
117
134
142
137
133
119
136
116
137
117
113
114
113
122
129
129
120
120
136
124
125
135
127
126
126
135
125
124
122
130
117
118
129
114
140
129
121
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132
119
131
141
138
139
141
113
135
122
121
112
119
141
128
123
128
138
140
125
122
123
131
138
139
113
128
115
135
133
139
119
113
128
115
139
138
133
138
125
118
119
119
138
119
134
132
130
133
112
120
119
116
129
128
140
130
137
114
134
141
130
142
139
119
141
121
133
120
138
127
113
121
116
123
131
118
133
124
123
122
114
133
135
127
132
121
134
134
115
114
128
126
128
131
116
141
121
122
125
140
126
115
122
122
121
117
140
129
121
125
130
124
115
124
124
132
131
142
136
128
116
122
114
123
142
122
133
116
123
130
135
126
123
121
134
127
132
140
122
123
112
126
112
132
114
113
137
142
123
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127
Use exce cells and show calculations.
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Can you please show the cells how got frequency, relative frequency and cumulative frequency
Can you please show the cells how got frequency, relative frequency and cumulative frequency
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