If your score chart looks like this...

Canon EF-S 18-135mm f/3.5-5.6 IS STM

06/28/2010 02:44:47 PM · #1

Let's chat.

What do you think the oscillations say (where are the DPC statisticians? We need them here...:-)?

Perhaps the Sub-Club can help iron out these oscillations...:-)

Oh and feel free to post your chart here too.. perhaps we will gain some collective insight?

(All I did was copied the scores from my profile page, sorted in ascending order, pasted them into MS Excel, and plotted the chart.)

ETA: The objective is to look at how I am improving/deteriorating in the quality of entries w.r.t. the scores, and how to make the trend more upward so the axis of oscillations moves up from 5.0. And if in the process, I can look at someone who has improved a lot over time, that would be interesting too.

ETA:

Niall (

NiallOTuama) prepared these additional charts from my scores...

Message edited by author 2010-06-28 18:19:35.

SteveJ

Canon EOS-7D

06/28/2010 02:48:57 PM · #2

Originally posted by Prash:

I'd say the patient seems to improving slowly, with a few remissions, but generally getting better:)

06/28/2010 02:49:01 PM · #3

Looks like a fairly normal score distribution, with general upward tendency. Not sure of the point you are making, but I'll play. Give me a few minutes...

06/28/2010 02:52:17 PM · #4

Originally posted by Yo_Spiff:

Looks like a fairly normal score distribution, with general upward tendency. Not sure of the point you are making, but I'll play. Give me a few minutes...

Thanks Steve. I am not trying to make a point. I am only trying to understand the chart, thought it would be interesting to see how this one compares to that of someone who has been improving consistently:-)

06/28/2010 02:52:51 PM · #5

Originally posted by SteveJ:

Originally posted by Prash:

Let's chat.

What do you think the oscillations say (where are the DPC statisticians? We need them here...:-)?

Perhaps the Sub-Club can help iron out these oscillations...:-)

Oh and feel free to post your chart here too.. perhaps we will gain some collective insight?

(All I did was copied the scores from my profile page, sorted in ascending order, pasted them into MS Excel, and plotted the chart.)

I'd say the patient seems to improving slowly, with a few remissions, but generally getting better:)

Hehe.. you are very optimistic. Thanks for your input.

Canon EF 85mm f/1.2L II USM

06/28/2010 03:07:56 PM · #6

My average over these last 50 entries is 5.697. I do think I have wilder swings.

Message edited by author 2010-06-28 15:12:11.

Cory

Canon EOS-1D Mark IV

06/28/2010 03:09:21 PM · #7

I'd say that you need to normalize this based on open/members only challenges/Free Study, as clearly there are a different set of expectations and voter behaviors in each that are distinct and significant.

-CB

Message edited by author 2010-06-28 15:10:02.

06/28/2010 03:12:50 PM · #8

Originally posted by Yo_Spiff:

I think I have wilder swings.

LOL! Thanks for sharing.

The one thing that is noticeable right away from your chart is that the scores are oscillating about 5.5 or so. That is a great trait!

Also, are these all the scores? I was wondering if you were ever in the 4's land (may be never:-) and then it slowly improved?

06/28/2010 03:14:37 PM · #9

Originally posted by coryboehne:

True Cory. However, the axis about which the curve oscillates can generally tell you about how talented the photographer is? E.g Steve's oscillate around a high 5's line, but mine around the high 4's line.

Math is fun...heh

06/28/2010 03:18:04 PM · #10

Originally posted by Prash:

Also, are these all the scores? I was wondering if you were ever in the 4's land (may be never:-) and then it slowly improved?

First entry was 5.26, second was 4.77. Mostly a mix of low to mid 5's and a few 4's for a while. Hit my first 6 at challenge #16, which unbelievably, was a freestudy. Took me almost 2 years to hit 6 in a freestudy again.

06/28/2010 03:19:26 PM · #11

Originally posted by Prash:

Also, are these all the scores?

Those are the most recent 50. The first on on that chart is my beloved shoehorn fly. I've got 242 challenges under my belt now.

Message edited by author 2010-06-28 15:19:57.

Tamron AF 28-80mm f/3.5-5.6 Aspherical for Canon

06/28/2010 03:33:09 PM · #12

Originally posted by Yo_Spiff:

Originally posted by Prash:
Also, are these all the scores?

Those are the most recent 50. The first on on that chart is my beloved shoehorn fly. I've got 242 challenges under my belt now.

Cool. Awesome (for the 242 entries:-):-)

JokersSoul

Canon EOS-50D

06/28/2010 03:33:52 PM · #13

Here is mine. Only 21 entries... but it doesn't look horrible...definitely room for improvement.

GeneralE

Canon PowerShot S3 IS

Canon 12x IS USM (S3 IS built-in Lens) -- 36-432mm (35mm EQ)

06/28/2010 03:34:47 PM · #14

If you want to see fours, then check my results. I can't chart my scores, but if anyone else wants to it's OK with me -- should look rather like the profile of an upside-down crosscut saw ... :-)

Cory

Canon EOS-1D Mark IV

Canon EF 85mm f/1.2L II USM

06/28/2010 04:16:03 PM · #15

Originally posted by Yo_Spiff:

Originally posted by Prash:
Also, are these all the scores? I was wondering if you were ever in the 4's land (may be never:-) and then it slowly improved?

First entry was 5.26, second was 4.77. Mostly a mix of low to mid 5's and a few 4's for a while. Hit my first 6 at challenge #16, which unbelievably, was a freestudy. Took me almost 2 years to hit 6 in a freestudy again.

You made me go look at my stats...

Apparently, I hit my first 6 in a free study (although it took me 25 entries...), after 4 months here, and I (unbelievably!) repeated the performance again in the next months' free study. This month's will not perform as well I suspect..

Although that wasn't really my first 6.. That was my 9th entry.. Barely cracked a 6...

Five of my first six entries were in the 4 range... Not exactly a stellar start.

Message edited by author 2010-06-28 16:19:33.

Cory

Canon EOS-1D Mark IV

Canon EF 85mm f/1.2L II USM

06/28/2010 04:17:18 PM · #16

Originally posted by GeneralE:

If you want to see fours, then check my results. I can't chart my scores, but if anyone else wants to it's OK with me -- should look rather like the profile of an upside-down crosscut saw ... :-)

Same goes for my stats... I'm simply too busy to chart them today (shouldn't even be messing about in the forums... But I'm on hold...).. But if anyone else should want to, then please do feel free, I won't take an offense no matter how erratic it looks..

06/28/2010 04:18:32 PM · #17

Here's my chart for all my entries going back to the first one. There is a visible trend over time.

06/28/2010 04:34:29 PM · #18

I just put mine on my profile (link).

There's always going to be some variation in anything. With enough data you should get a trend. Like those histograms you get during those challenges. You should have a well enough defined mean and a standard deviation.
You could guess your next scores if you had enough data :)

I wonder. Are these nice plots against the ToU, technically?
4.6: "Except as expressly set forth herein, you may not reproduce or distribute any information available from the Website, electronically or otherwise. You shall not store or aggregate such information in any manner."

Message edited by author 2010-06-28 16:51:01.

06/28/2010 04:37:43 PM · #19

Originally posted by Yo_Spiff:

Here's my chart for all my entries going back to the first one. There is a visible trend over time.

Yes it definitely shows an upwards trend. Thanks Steve!!!

06/28/2010 04:38:44 PM · #20

Originally posted by NiallOTuama:

Re: ToU violations, I am not sure, Niall. I would think that since the scores are publicly available on member profiles, and we are only sharing it within the forums, it should be ok?

ETA: How did you normalize the scores?

Message edited by author 2010-06-28 16:39:22.

06/28/2010 04:41:45 PM · #21

Originally posted by Prash:

I was mostly joking :)
The normalised position would, I suppose, be better named as the entry's percentile. You know the % in the list of entries. X% means you did better than X% of the other participants. Or at least that's what I think.
I called it normalised cause I scaled it between 1 and 10 instead of 1 and 100. I should look up more info about numerous axes in google spreadsheets. Or maybe it'd be better to scale everything between 0 and 1.

Edit: Done.

Message edited by author 2010-06-28 16:47:39.

06/28/2010 04:54:58 PM · #22

Originally posted by NiallOTuama:

Originally posted by Prash:
Re: ToU violations, I am not sure, Niall. I would think that since the scores are publicly available on member profiles, and we are only sharing it within the forums, it should be ok?

ETA: How did you normalize the scores?

I was mostly joking :)
The normalised position would, I suppose, be better named as the entry's percentile. You know the % in the list of entries. X% means you did better than X% of the other participants. Or at least that's what I think.
I called it normalised cause I scaled it between 1 and 10 instead of 1 and 100. I should look up more info about numerous axes in google spreadsheets. Or maybe it'd be better to scale everything between 0 and 1.

Edit: Done.

Yes. Good point. I should've thought of that before:-)
Of course this will all become perfect if the number of (and even themselves) participants remained the same throughout...

Message edited by author 2010-06-28 16:55:26.

06/28/2010 04:58:49 PM · #23

Prash, can you email/pm/send somehow your data? It'd be fun to play around with some more numbers than I have.

06/28/2010 05:00:01 PM · #24

Originally posted by NiallOTuama:

Prash, can you email/pm/send somehow your data? It'd be fun to play around with some more numbers than I have.

Sure.

PM me your email id?

ETA: In fact you can grab all that data from my profile page. just sort them by date of challenge, select, copy, paste the entire table contents.

Message edited by author 2010-06-28 17:01:10.