The incomplete table and histogram give information about the waiting time, in minutes, experienced by patients at a dental surgery.
Time (t minutes)
Frequency
0 30 35
40 t<60
60 20
80 t < 100
10
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
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