The directly measured redshifts of the long gamma-ray bursts Ð obtained
from the afterglow data - are separated into two samples. The bursts
detected first by the Swift satellite gives the \\\"Swift-sample\\\"; the
remaining ones forms the \\\"non-Swift-sample\\\".We perfored five statistical tests to compare the redshifts in these two
samples. All theses tests show that in the Swift sample the redshifts are
on average larger.
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