Mathematics, 16.05.2021 22:30, caitlyn73
The cumulative frequency graph gives information about the lengths, in minutes, of 80
telephone calls
80
60
Cumulative
frequency
40
20
10
15
20
25
30
Length of call (minutes)
Find an estimate for the interquartile range of the lengths of the 80 calls.
Answers: 3
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The cumulative frequency graph gives information about the lengths, in minutes, of 80
telephone cal...
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