1/4 Marks The incomplete table and histogram give information about the waiting time,
in minutes, experienced by patients at a dental surgery.
Frequency
Time (t minutes)
0 45
30 35
40 12
60 20
80 10
Frequency density
a) Use the histogram to complete
the table.
b) Use the table to complete
the histogram.
0
20
40
60
Time (t minutes)
80
100
fo-
2
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