What kinds of info indicate a datapoint is invalid?

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Anne Stanton

Jun 2015

Hi, I'm trying to sort through my dataset and determine which datapoints are useful and which ones ought to be discarded (probably due to operator error). At this point I question the NPQt values that show up as negative. Can these be disregarded and the rest of that datapoint kept or is the whole measurement suspect? Is there tutorial for how to sift through the data and make these kinds of decisions? Thanks, Anne

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    Jun 2015

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    Jul 2015

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Greg Austic

Jul 2015

Anne you and I had a long discussion on this, just wanted to post here to say that the answer is long and kind of complicated and requires a full video which I hope to make soon -