Definitions
from Wiktionary, Creative Commons Attribution/ShareAlike License.
 adjective mathematics Having a
flexible number or nature ofparameters which are not fixed in advance.  adjective statistics Free of assumptions about the frequency distributions of the variables being assessed.
from WordNet 3.0 Copyright 2006 by Princeton University. All rights reserved.
 adjective not involving an estimation of the parameters of a statistic
Etymologies
from Wiktionary, Creative Commons Attribution/ShareAlike License
Examples

While from a statistical point of view this is a relatively small sample size of images, when appropriate statistics were performed such as nonparametric statistics for small samples, the difference was statistically significant: p

I considered running the nonparametric estimates, but it seemed like econometric overkill.
IQ and Living Standards, Arnold Kling  EconLog  Library of Economics and Liberty

You * have* to use SalaiMartin's nonparametric method to summarise the regression results for this reason.
IQ and Living Standards, Arnold Kling  EconLog  Library of Economics and Liberty

While from a statistical point of view this is a relatively small sample size of images, when appropriate statistics were performed such as nonparametric statistics for small samples, the difference was statistically significant: p

While from a statistical point of view this is a relatively small sample size of images, when appropriate statistics were performed such as nonparametric statistics for small samples, the difference was statistically significant: p

Other comments: SalaiMartin's nonparametric tests aren't "econometric overkill"; they're more or less the only way that you can consistently estimate the cdf.
IQ and Living Standards, Arnold Kling  EconLog  Library of Economics and Liberty

The data used to produce your figure IV makes it look as if you've done more or less all the numbercrunching you need in order to do the nonparametric test so I don't understand why you don't just bite the bullet and do it.
IQ and Living Standards, Arnold Kling  EconLog  Library of Economics and Liberty

The data used to produce your figure IV makes it look as if you've done more or less all the numbercrunching you need in order to do the nonparametric test so I don't understand why you don't just bite the bullet and do it.
IQ and Living Standards, Arnold Kling  EconLog  Library of Economics and Liberty

While from a statistical point of view this is a relatively small sample size of images, when appropriate statistics were performed such as nonparametric statistics for small samples, the difference was statistically significant: p

However, because it is unclear how to assess independence of a specific cultural practice, such as spice use, and because our sample was so broad (representing every continent and 16 of the world's 19 major linguistic groups [Ruhlen 1987]), we treated all countries as if they were independent and used nonparametric analyses.
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