B) On the grid, draw a frequency polygon for the information in the table.
(2)
20
The table shows information
about the heights of 70 plants.
Height (h cm) Frequency
10 <h< 20
5
20 <h < 30
10
30 <h<40
10
40 < 5 < 50
20
50 <h <60
15
60 <h < 70
10
15-
Frequency
a) Find the class interval that
contains the median. (1)
5
+
0-
0
10
20
50
60
70
30 40
Height (h cm)
Click here for any special
symbols you may need.
Total marks: 3
Ruler