Question

The following data represent the height (in cm) of 50 students in a class:
140 139 133 136 138 133
138
131
130
132
133
136
139
133 132 127 138
127
129
126
130
133
131
136
137
140
138
135
139
134 131 130 129
134
132
128
139
140
134
133
140
138
135
132
134
137
132 139 140
Prepare a grouped frequency table with class-intervals 126 - 129. 129 - 132. 132 - 135. 135
-138and 138- 141.​

Answer 1

Answer:

How many total students are there

Answer 2

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