Tag Archives: MS Excel

Zero vs. Missing

Posted on February 25, 2010 by Jonathan Callahan

On the left we have zero, our integer measure of nothingness.  On the right we have missing value, aka N/A, aka NA, our signal that the value of a datapoint is unknown.  Everyone who deals with data has to deal …   read more …

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Liberating data from web sites

Posted on January 6, 2010 by Jonathan Callahan

The great thing about putting data files up on a public web site is that data consumers can download the data with a point and a click.  Unfortunately, when lots of individual data files are involved, the consumer of data …   read more …

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