Re: weibull plot on weibull scaled paper

*To*: mathgroup at smc.vnet.net*Subject*: [mg116690] Re: weibull plot on weibull scaled paper*From*: DrMajorBob <btreat1 at austin.rr.com>*Date*: Thu, 24 Feb 2011 06:21:47 -0500 (EST)

BUG ALERT. I typed all three lines into separate cells. I get FindRoot::sszero and FindRoot::jsing errors. Bobby On Wed, 23 Feb 2011 04:24:12 -0600, Bill Rowe <readnews at sbcglobal.net> wrote: > On 2/22/11 at 1:12 PM, btreat1 at austin.rr.com (DrMajorBob) wrote: > >> This gave the FindRoot:jsing error on the first try just now... and >> also the third try. > >> dist = WeibullDistribution[7, 200]; >> data = RandomVariate[dist, 300]; >> ProbabilityScalePlot[data, "Weibull"] >> QuantilePlot[data, dist] > >> So the error is not unusual. > > Hmmm... If I copy and paste just > > dist = WeibullDistribution[7, 200]; > data = RandomVariate[dist, 300]; > ProbabilityScalePlot[data, "Weibull"] > > into a single cell then execute it, I see the error you > reported. Alternatively, if I type the above by hand into a > single cell I still see the error you reported consistently. Or > I can copy each line one by one pasting each into a cell then > execute each line before pasting the next and still get the error. > > But if I enter each line by hand into individual cells, I don't > see the error. So, there appears to be a bug somewhere. That is, > the various ways I've described above of doing the computation > should all behave identically. > > -- DrMajorBob at yahoo.com