If I recall my sadistics ... I mean, statistics classes correctly, Hops
per request and Connection rate are not standard distributions so
standard deviation is a misleading parameter to calculate. For example,
~98% of all values should be within +- 3 stddev of the mean in a
standard/normal distribution. Does that mean that we have >1% negative
hops per request, etc. if mean<3*stddev? Nope. 
These are Poisson processes I believe. Info about them can be found at:
http://www.math.uah.edu/stat/poisson/index.html
Maybe some sort of simple histogram would be a more meaningful
diagnostic tool for these types of parameters (rather than going
overboard and calculating the shape and rate parameter that are
intuitive only to few).

Mike


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