## What does "average credits" mean?

Questions and Answers : Getting started : What does "average credits" mean?
Message board moderation

AuthorMessage
Stuart

Joined: 7 Jan 12
Posts: 13
Credit: 176,562
RAC: 0
Message 1183986 - Posted: 9 Jan 2012, 9:52:20 UTC

I am new to this... does it mean average credits per work unit?

This doesn't seem to be explained anywhere..

Thanks
ID: 1183986 ·
Ageless

Joined: 9 Jun 99
Posts: 14132
Credit: 3,430,337
RAC: 2,313
Message 1183993 - Posted: 9 Jan 2012, 10:49:53 UTC - in response to Message 1183986.

What is RAC?
Jord

Ancient Astronaut Theorists suggest that in many ways, you can be considered an alien conspiracy!
ID: 1183993 ·
BilBg
Volunteer tester

Joined: 27 May 07
Posts: 3715
Credit: 8,834,764
RAC: 536
Message 1183997 - Posted: 9 Jan 2012, 10:58:15 UTC - in response to Message 1183986.

ID: 1183997 ·
Stuart

Joined: 7 Jan 12
Posts: 13
Credit: 176,562
RAC: 0
Message 1184005 - Posted: 9 Jan 2012, 11:22:45 UTC - in response to Message 1183997.

Thanks both.

Not really sure I understand the calculation. If it's an average, I was expecting the numerator to be total credit and the denominator to be something like number of days, or number of projects or some such.

So, on day one, I'd expect total credit to equal average credit.

But it doesn't seem to work like that.
ID: 1184005 ·
BilBg
Volunteer tester

Joined: 27 May 07
Posts: 3715
Credit: 8,834,764
RAC: 536
Message 1184012 - Posted: 9 Jan 2012, 11:43:20 UTC - in response to Message 1184005.

It's not just Average (Credit/day) over the years, it's Recent Average Credit.

The formula is based on week so when your account is one week old
try Credit/7 and see is this = to your RAC (I'm not sure)

After you accumulate some statistics (days) (now your page shows "Insufficient data available for charts")
you will be able to see some graphs:
http://boincstats.com/stats/user_graph.php?pr=sah&id=9639114

My:
http://boincstats.com/stats/user_graph.php?pr=sah&id=8647488

- ALF - "Find out what you don't do well ..... then don't do it!" :)
ID: 1184012 ·
Stuart

Joined: 7 Jan 12
Posts: 13
Credit: 176,562
RAC: 0
Message 1184043 - Posted: 9 Jan 2012, 14:28:55 UTC - in response to Message 1184012.

ok. Thanks for that.

I guess it's just something that has to "spool up" as I remain active for longer...

:)
ID: 1184043 ·
John McLeod VII
Volunteer developer
Volunteer tester

Joined: 15 Jul 99
Posts: 24806
Credit: 790,383
RAC: 69
Message 1186267 - Posted: 18 Jan 2012, 20:20:22 UTC

I believe it is an exponentially reducing average with a half life of 2 weeks. The basic principle is that tasks that are two weeks old have half the value of tasks completed now. 4 weeks old have half the value of two weeks old...

BOINC WIKI
ID: 1186267 ·

Questions and Answers : Getting started : What does "average credits" mean?