Prepare a run diagram for this emergency call data. Use five-minute intervals (i.e., count the calls received in each five-minute interval. Use intervals of 0 to 4, 5 to 9, etc.). Note: Two or more calls may occur in the same minute; there were three operators on duty this night. What can you conclude from the run chart?

Call Time Call Time Call Time Call Time 1 1:03 12 1:36 23 1:56 34 2:08 2 1:06 13 1:39 24 2:00 35 2:11 3 1:09 14 1:42 25 2:00 36 2:12 4 1:11 15 1:43 26 2:01 37 2:12 5 1:12 16 1:44 27 2:02 38 2:13 6 1:17 17 1:47 28 2:03 39 2:14 7 1:21 18 1:48 29 2:03 40 2:14 8 1:27 19 1:50 30 2:04 41 2:16 9 1:28 20 1:52 31 2:06 42 2:19 10 1:29 21 1:53 32 2:07 11 1:31 22 1:56 33 2:08

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