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GeneralRe: User profile nit pick Pin
James T. Johnson6-Apr-02 5:27
James T. Johnson6-Apr-02 5:27 
GeneralRe: User profile nit pick Pin
Tim Deveaux6-Apr-02 15:04
Tim Deveaux6-Apr-02 15:04 
GeneralRe: User profile nit pick Pin
Chris Maunder6-Apr-02 15:33
cofounderChris Maunder6-Apr-02 15:33 
GeneralRe: User profile nit pick Pin
James T. Johnson6-Apr-02 15:43
James T. Johnson6-Apr-02 15:43 
GeneralRe: User profile nit pick Pin
Tim Deveaux7-Apr-02 13:05
Tim Deveaux7-Apr-02 13:05 
GeneralRe: User profile nit pick Pin
Chris Maunder8-Apr-02 16:25
cofounderChris Maunder8-Apr-02 16:25 
GeneralRe: User profile nit pick Pin
Tim Deveaux9-Apr-02 4:58
Tim Deveaux9-Apr-02 4:58 
GeneralRatings, again... Pin
Chris Losinger5-Apr-02 10:52
professionalChris Losinger5-Apr-02 10:52 
As long as you're working on CP.Net...

What if the article ratings showed the standard or average deviation along with the average? These values are pretty easy to calculate and can give you a good idea as to the accuracy of the beloved 'average' value.

If you're worried about scaring people away with terms like "standard deviation", you could calculate the StdDev then scale to a 1-10 range and call it something like "confidence" and represent it with a little graph or something.

Here's a little example:

Article A:  3,4,4,5,4,4,3,3,3,3,3,2,2,5,4,3,3
Article B:  5,5,5,5,5,5,5,5,4,4,4,1,1,1,1,1,1


Take these two sets of hypothetical ratings, for example. They have the same average (3.41), but B should probably be considered a more highly-thought-of article. Those 1's in B look out of line with the the rest of the values - it should be rated much higher. The ratings for article A, though, make sense - it's mostly 3's and 4's.

A avg: 3.41
B avg: 3.41

Through the magic of Excel, we get the Average and Standard Deviations:

A AvgDev: 0.719
B AvgDev: 1.418

A StdDev: 0.870
B StdDev: 1.660

Each of these values is much higher for Article B. This confirms that the ratings for A are more consistent than those for B. You could interpret this to mean that A's average more accurately reflects the majority of its ratings than B's average does for B's ratings.

This is all basic statistics, nothing crazy.

And here's the "confidence" thing i was talking about. I'll just scale the StdDev to a 0.0 to 1.0 range.

A Confidence: 0.692
B Confidence: 0.412

Or, A's confidence is at 70% while B's is at 41%.

Conf = (2.83-StdDev)/2.83. 2.83 is the maximum StdDev for data in the range 1 to 5 (i think Smile | :) ).

(this "confidence" is just something i made up, it's not related to any real statistical calculation)

it's friday, i'm bored

-c



   "What the hell are you getting so upset about? I thought you didn't believe in God".
   "I don't," she sobbed, bursting violently into tears, "but the God I don't believe in is a good God, a just God, a merciful God. He's not the mean and stupid God you make Him out to be".
   -- Joseph Heller

Smaller Animals Software, Inc.

GeneralRe: Ratings, again... Pin
Nick Parker5-Apr-02 11:25
protectorNick Parker5-Apr-02 11:25 
GeneralRe: Ratings, again... Pin
Chris Losinger5-Apr-02 11:38
professionalChris Losinger5-Apr-02 11:38 
GeneralRe: Ratings, again... Pin
Nick Parker5-Apr-02 11:57
protectorNick Parker5-Apr-02 11:57 
GeneralRe: Ratings, again... Pin
Chris Maunder5-Apr-02 12:11
cofounderChris Maunder5-Apr-02 12:11 
GeneralRe: Ratings, again... Pin
Nish Nishant6-Apr-02 5:51
sitebuilderNish Nishant6-Apr-02 5:51 
GeneralRe: Ratings, again... Pin
Shog96-Apr-02 6:14
sitebuilderShog96-Apr-02 6:14 
GeneralRe: Ratings, again... Pin
Nish Nishant6-Apr-02 7:04
sitebuilderNish Nishant6-Apr-02 7:04 
GeneralSpam on Code Project Pin
Nick Parker5-Apr-02 10:04
protectorNick Parker5-Apr-02 10:04 
GeneralRe: Spam on Code Project Pin
Chris Maunder5-Apr-02 11:53
cofounderChris Maunder5-Apr-02 11:53 
GeneralVC++ Image Processing Pin
5-Apr-02 4:55
suss5-Apr-02 4:55 
GeneralRe: VC++ Image Processing Pin
Chris Losinger5-Apr-02 5:12
professionalChris Losinger5-Apr-02 5:12 
GeneralRe: VC++ Image Processing Pin
Nish Nishant5-Apr-02 7:35
sitebuilderNish Nishant5-Apr-02 7:35 
GeneralRe: VC++ Image Processing Pin
Chris Maunder5-Apr-02 11:54
cofounderChris Maunder5-Apr-02 11:54 
GeneralRe: VC++ Image Processing Pin
Christian Graus5-Apr-02 12:07
protectorChristian Graus5-Apr-02 12:07 
GeneralCode Project Question Pin
Nick Parker5-Apr-02 1:40
protectorNick Parker5-Apr-02 1:40 
GeneralRe: Code Project Question Pin
Chris Maunder5-Apr-02 2:00
cofounderChris Maunder5-Apr-02 2:00 
GeneralRe: Code Project Question Pin
Nick Parker5-Apr-02 2:54
protectorNick Parker5-Apr-02 2:54 

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