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Math problem.

koenjan
Active Member
Koen J Member Since: Sep 17, 2015
1 of 4

I have read this post.

https://support.upwork.com/entries/23103173

 

And below is where I'm not clear.

(successful contract outcomes - negative contract outcomes) /total outcomes = job success rate

does it make sense? If I finished a job with negative outcome, I get -100%?

 

I think the below one makes sense.

(total outcomes - negative contract outcomes) /total outcomes = job success rate

 

I'm not that great in Math, so forgive me if I'm wrong.

 

 

d_lidwell
Community Guru
Dawn L Member Since: Sep 3, 2015
2 of 4

@Koen J wrote:

I have read this post.

https://support.upwork.com/entries/23103173

 

And below is where I'm not clear.

(successful contract outcomes - negative contract outcomes) /total outcomes = job success rate

does it make sense? If I finished a job with negative outcome, I get -100%?

 

 


 I'm not the greatest at math either (just ask my husband! LOL!) but the way I understand it is like this:

 

(successful contracts - unsuccessful contracts) / total contracts

 

So, for instance, if you have 15 successfully completed contracts, and 3 unsuccessfully completed contracts (or negative feedback) for a total of 18 total contracts, the JSS would be calculated like this:

 

(15-3) / 18 = JSS%

 

Again, I could be completely wrong on this, and I am truly horrible with math, but this is how I understand it lol. 

 

Someone please correct me if I'm misunderstanding this lol.

cbsolz
Ace Contributor
Vadivelan R Member Since: Aug 28, 2015
3 of 4

@Koen

 

You are right!! I felt the same when I first read that entry sometime back. 

 

Lets say, I did two jobs, one success and the other ends in failure. My JSS should be 50% right? According to their calculation:

 

JSS = ( Success - failure ) / Total Jobs

JSS = (1-1)/2 * 100 =  0%  ??

 

Lets assume I failed both jobs:

JSS = (0-2)/2 * 100 = -100% ??

 

It should be, as you said:

JSS = ( Total Jobs - Failures / 2 ) * 100

( 1 success, 1 failure ) JSS =  (  2-1 / 2 ) * 100 =  50%

( both failure ) JSS = (  2-2 / 2 ) * 100 = 0%

 

I think that they implemented correctly, but not properly explained in that article.

 

 

d_lidwell
Community Guru
Dawn L Member Since: Sep 3, 2015
4 of 4

Lol I don't know. To be honest, personally the mathematical equation they're using doesn't matter to me too much when the algorithm is buggy anyway, or we don't have enough information to actually understand the true JSS calculation. 

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