The heights (in cm) of 20 students were recorded as under:
128 142
126 131 136 128 133 132
133 134 138 135 134
136 137 139 143
129
138
Answers
Answer:
ANSWER
Minimum height =131cm
Maximum height =156cm
Range =156−131=25
Number of classes =4
Class range =
4
25
=6.25 approx 6
class 1=131+6=137
class 2=137+6=143
class 3=143+6=149
class 4=149+6155
class 5=155+6=161
Class interval Frequency
131−137 9
137−143 3
143−149 2
149−155 4
155−161 2
Step-by-step explanation:
Answer:
Minimum height =131cm
Maximum height =156cm
Range =156−131=25
Number of classes =4
Class range =425=6.25 approx 6
class 1=131+6=137
class 2=137+6=143
class 3=143+6=149
class 4=149+6155
class 5=155+6=161
Class interval Frequency
131−137 9
137−143 3
143−149 2
149−155 4
155−161 2