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(: Test: K-SeqAVGFunc-19                                 :)
(: Written by: Frans Englich                             :)
(: Date: 2006-10-05T18:29:40+02:00                       :)
(: Purpose: A test whose essence is: `avg((-5, -0, -3, -6)) eq -3.5`. :)
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avg((-5, -0, -3, -6)) eq -3.5