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DuPage County Statistics

AverageMedian# YearsHigh CountLow Count
All Years72.66325163 (1994)32 (2010)
1st 10 Years102.195.510163 (1994)63 (1999)
Last 10 Years53.253.51068 (2008)32 (2010)
Likelihood that the numbers counted have decreased: 99%*.

Fermilab Site Statistics

AverageMedian# YearsHigh CountLow Count
All Years3.831510 (2014)0 (2008)
1st 10 Years2.6297 (1997)0 (2002)
Last 10 Years4.74.5810 (2014)0 (2008)
Likelihood that the numbers counted have increased: 58%*.
Likelihood that occurrence rate has decreased: 18%**

* The probability is obtained from a "Wilcoxon two-sample test" comparing the numbers reorded in the first 10 years with those recorded in the last 10 years.
** Assuming the observation rate is uniform, this number is the probability of obtaining a smaller difference between the number of records in the first and last 10 years of the count than is observed. A high probability implies that the assumption is wrong.

DuPage County Data

YearTallyYearTallyYearTallyYearTally
1990143199167199296199392
199416319951191996951997104
199879199963200063200143
200262200345200451200551
200666200752200868200955
201032201142201248201363
201455

Fermilab Site Data

YearTallyYearTallyYearTallyYearTally
1990--1991--1992--1993--
1994--1995--1996--19977
19982199912000220012
20020200332004220052
20063200702008020091
20106201152012420137
201410