Date: Tue Apr 13 2004 - 16:03:31 EDT
The range of Lanny Chambers' arrival dates for the Ruby-throated hummingbirds in St. Louis was 7 days. The median date of the arrival of the Ruby-throated hummingbirds is April 19th. By averaging the dates, we have come up with an estimate of the first arrival in 2004. The estimated arrival is April 21 which is the average arrival of all of Lanny Chambers' previous arrival dates.
Iselin Middle School/grade 7
Justin
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