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dlr5288
dlr5288
10/31/2016 10:07:28 PM
User Rank
Platinum
Re: Money Talks
Thanks for the info! Definitley interesting....how times have chnaged haha

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batye
batye
10/13/2016 1:43:47 PM
User Rank
Platinum
Re: Cords Cutters
@mhhf1ve interesting point - thanks for the link... make me think...

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mhhf1ve
mhhf1ve
10/3/2016 9:22:05 PM
User Rank
Platinum
Re: Cords Cutters
> "Theoretically you could produce very good ratings by pairwise comparison..."

Well. Sorta. Theorectically, it can get complicated very quickly, and the REAL catch is.. there could be no "good" rating resolution at the end of all your data collection. There's a "cycling" of preferences that can occur in real datasets -- sometimes called a voting paradox.

https://en.wikipedia.org/wiki/Voting_paradox

Basically, it's a Rock-Paper-Scissors game where the choices can be cycled in such a way that no one can win -- because none of the candidates are clearly superior. 

Sometimes even big data doesn't help.. it just seems like it should.

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faryl
faryl
9/30/2016 6:51:42 PM
User Rank
Platinum
Re: Money Talks
So it turns out in the 1930s, the government imposed what was supposed to be a temporary tax on gasoline that was half a cent. Since gas was only about 15/gallon back then, the additional half cent was enough that rounding up would have been a significant price increase, so they left it at half a cent.

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faryl
faryl
9/30/2016 5:59:49 PM
User Rank
Platinum
Re: Money Talks
I never thought about that! (I wonder if it's because gas is a commodity and outside forces set the price?) (off to google!)

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dlr5288
dlr5288
9/30/2016 3:26:35 PM
User Rank
Platinum
Re: Cords Cutters
I agree! I think that if they were able to get their product in a timely manner then that's worth 5 stars. The fact that they don'g giv 5 stars, just because is confusing to me..

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JohnBarnes
JohnBarnes
9/17/2016 6:57:19 PM
User Rank
Platinum
Re: Cords Cutters
Theoretically you could produce very good ratings by pairwise comparison: just ask people "do you have experience with X and with Y? If yes, would you rather have X at its price, ratehr have Y at its price, or are you really indifferent?" Such surveys require more manipulation and and analysis but there's much more valid info in there to dig out, which is why in our era of bigger data and faster processors (and better stats) than ever before, so many makret analysts are trying to find people who will put up with taking that kind of survey.

That, of course, is the catch. If you have tried five brands of nasal floss, and there are six common reasons for preferring one brand to the other, to get a full set of preferences they'd have to ask you  36 questions, as opposed to fewer than ten with traditional slider or number-rating scales.

"Which do you prefer, Naso-Rooter or Sinus Scrub?"

"Which do you prefer, Naso-Rooter or Phlegmix?" .... etc., till you've compared all 15 combinations ... then

"Which is more important to you, a stylish package or wrapping comfotably around your fingers ..."

etc. for 21 more questions.

There are levels of information you just can't get by promising a lottery ticket good for a free burger at Denny's!

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mhhf1ve
mhhf1ve
9/14/2016 10:39:08 PM
User Rank
Platinum
Re: Cords Cutters
Actually, as mentioned before, you can't always rely on bad (eBay) reviews either -- because some people give the worst ratings just because they are unsatisfied with some random aspect unrelated to the seller's abilities. The bad reviews have to be specifically worded to point out what went wrong, and even then, it could just be a "revenge" review for not liking the product or not getting a quick refund/return. Customers aren't *always* right... 

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faryl
faryl
9/14/2016 6:16:28 PM
User Rank
Platinum
Re: Cords Cutters
LOL At least when someone writes a *bad* eBay seller review, you know the seller must really be bad!

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mhhf1ve
mhhf1ve
9/11/2016 4:01:21 AM
User Rank
Platinum
Re: Cords Cutters
> "People who rate things on Amazon..."

At least these ratings are more quantitative than "Great buyer!! A+++++ Would sell to again." Does anyone trust eBay ratings/reviews anymore???

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