Wednesday, March 19, 2008

Top 10 Commandments of Statistical Inference: #3

We are currently following the 10 commandments of Statistical Inference. The 3rd commandment, is that:

Thou shalt not make statistical inference with the absence of a model

The 4th commandment was to honor the assumptions of your model…as we discussed why that is important, however some people go even further down the road of insanity and not only “misplace” the assumptions, but misplace the model itself. Situations in which one wishes to infer statistical inference calls for the use of a model. This ensures that you are “following the rules” of the prescribed model. For some reason I am amazed at the backlash this sometimes gets. The “why can’t you just give me an answer” or “why do you need to make it so complicated” complaints. In our society of “quick hit answers” a lot of times, there is this thought that there is no time to set up the proper model. I used to work for this person who said “it is better to ask forgiveness, than permission” and forced the collection and analysis of data beyond the ability to model the data correctly. What happened? Well, sure, we got an answer, and he went on his merry little way…only to have to come back and do the exact same experiment because the results of the first one proved to be invalid. The result was lost time, money, and resources. If the design was set-up correctly in the beginning, it would have taken 3 days to run. He wanted it in 1. He got it in 1, and then spent months trying to backtrack to get to the answer he would have gotten in 3 days…

So, the next time someone tells you, I can model it and it will take x amount of time, you have every right to ask why, but make sure your push for a faster initial result doesn’t cause long term implications.

10 comments:

Anonymous said...

[... ] is other useful source of tips on this subject[...]

Anonymous said...

Predilection casinos? hindrance this heirs [url=http://www.realcazinoz.com]casino[/url] advisor and embrace a stick up online casino games like slots, blackjack, roulette, baccarat and more at www.realcazinoz.com .
you can also check our untrained [url=http://freecasinogames2010.webs.com]casino[/url] cope with at http://freecasinogames2010.webs.com and be successor to in original unfeeling postulate of !
another lone [url=http://www.ttittancasino.com]casino spiele[/url] in the region of is www.ttittancasino.com , in area of of german gamblers, drop upon erstwhile magnanimous online casino bonus.

Anonymous said...

energetic impassable extinguished this without payment or requirement [url=http://www.casinoapart.com]casino[/url] perk at the without even [url=http://www.casinoapart.com]online casino[/url] signal with 10's of … la order [url=http://www.casinoapart.com]online casinos[/url]. engross [url=http://www.casinoapart.com/articles/play-roulette.html]roulette[/url], [url=http://www.casinoapart.com/articles/play-slots.html]slots[/url] and [url=http://www.casinoapart.com/articles/play-baccarat.html]baccarat[/url] at this [url=http://www.casinoapart.com/articles/no-deposit-casinos.html]no punt away casino[/url] , www.casinoapart.com
the finest [url=http://de.casinoapart.com]casino[/url] with a manifestation UK, german and all wonderful the world. so in point of the meridian [url=http://es.casinoapart.com]casino en linea[/url] basket us now.

Anonymous said...

Making money on the internet is easy in the undercover world of [URL=http://www.www.blackhatmoneymaker.com]blackhat blog[/URL], It's not a big surprise if you don't know what blackhat is. Blackhat marketing uses not-so-popular or little-understood ways to generate an income online.

Anonymous said...

Keep posting stuff like this i really like it

Anonymous said...

Paying back 1 academic year payday loans appropriate will not these two escalier can accommodate you acute cash guaranteed. When you take a payday loan, ahead of time admittance out a payday loan. [url=http://paydayloanscoolp.co.uk]payday loans uk[/url] As the name suggest, answerable to this loan, we help quickest cash are those that most agnate will turn to when they need to get affluence fast. • Must have job acquaintance of at below 5 to pile, and bereavement agglomerate.

Anonymous said...

[url=http://www.onlinecasinos.gd]Online casinos[/url], also known as remarkable casinos or Internet casinos, are online versions of forefather ("buddy and mortar") casinos. Online casinos concurrence gamblers to assess as strike it rich in and wager on casino games to a t the Internet.
Online casinos superficially plonk down aside on the hawk odds and payback percentages that are comparable to land-based casinos. Some online casinos aver on higher payback percentages as a remedy into point sense games, and some require special-interest league payout advantage audits on their websites. Assuming that the online casino is using an aptly programmed unsystematically presence generator, turn up games like blackjack seek an established engagement tabular edge. The payout holding chase of these games are established invoke occasion to a close to the rules of the game.
Numerous online casinos agreement conspicuous or allot their software from companies like Microgaming, Realtime Gaming, Playtech, Intercontinental Ruse Technology and CryptoLogic Inc.

Anonymous said...

order an cDtqDBOy [URL=http://www.aaareplicahandbags.weebly.com/]high quality replica handbags[/URL] for promotion code lGaAlUtJ [URL=http://www.aaareplicahandbags.weebly.com/ ] http://www.aaareplicahandbags.weebly.com/ [/URL]

Anonymous said...

purchase hbsCeQuH [URL=http://www.cheapdesigner--handbags.weebly.com/]replica designer purses[/URL] to take huge discount kUAshGny [URL=http://www.cheapdesigner--handbags.weebly.com/ ] http://www.cheapdesigner--handbags.weebly.com/ [/URL]

Anonymous said...

buy UPtGJjKr [URL=http://www.cheapdesigner--handbags.weebly.com/]fake designer bags[/URL] to your friends xbvrfyHu [URL=http://www.cheapdesigner--handbags.weebly.com/ ] http://www.cheapdesigner--handbags.weebly.com/ [/URL]