SA Footy

Does anyone know the equation for % in SANFL. I know in the AFL it is for x 100 / ast. But I'm trying to work out how the SANFL use their equation. I believe it's slightly more complicated than the AFL but i'm not exactly sure how it works. can anyone please help.

Points for divided by Points for + Points against.
Makes much more sense than the AFLs IMHO.

Wedgie wrote:Points for divided by Points for + Points against.
Makes much more sense than the AFLs IMHO.

Slight correction Wedgie.

(Points for multiplied by 100) divided by (Points for + Points against)

Adelaide Hawk wrote:Slight correction Wedgie.

(Points for multiplied by 100) divided by (Points for + Points against)

No correction needed as .50 is equivilent to 50%, no need to times it by anything.

They measure different aspects.

SANFL it is the percentage of the game that you scored.
That is if Eagles score 60pts and Roosters score 40pts (sorry Wedgie)
Then Eagles have 60% of game score (60 out of 100) North have 40%

In AFL it is the percentage of your score against your opponents
Using the above it would be:
Eagles 150% (60 out of 40) North 66.7% (40 out of 60)

At the end of the year in SANFL your % is how much you've scored out of the total scored in all your games. To be ahead really need % over 50%

In AFL 100% or more means you are ahead of what is scored against you.

I prefer SANFL measure - believe it to be more accurate as to how you are performing.
It is mathematically better, as in example above in the SANFL the total score of both Eagles & North is 100% - in AFL version the match had a total of 216.7%.

Thank's for all the help guys. Now I know how and why it's done this way. Yes must say CD i agree with you as it certainly does seem a more mathematicaly correct way to equate percentage. One wonders why the braniacs at the AFL don't adopt this system.

Wedgie wrote:(Points for) divided by (Points for + Points against).
Makes much more sense than the AFLs IMHO.

The question was what was the formula for working out % in the SANFL. Wedgie was right.
This is the formula that is used in the Leaguesite module template for PFPwebsite as well as other footy ranking software. Forget the times by 100 or divide by 50 - thats just clouding the issue.

Spiritof64 wrote:

Wedgie wrote:(Points for) divided by (Points for + Points against).
Makes much more sense than the AFLs IMHO.

The question was what was the formula for working out % in the SANFL. Wedgie was right.
This is the formula that is used in the Leaguesite module template for PFPwebsite as well as other footy ranking software. Forget the times by 100 or divide by 50 - thats just clouding the issue.

So ... how do they get to a percentage of i.e. 62.45 if they don't multiply by 100?

Copied and pasted from the Power from Port website:

This is the formula used to calculate the SANFL ladder
Total points For is divided by total points For and Against X 100
Example: 870 pts For divided by pts For 870 and Against 692 (1562) = .55697 X 100 = 55.70%

You cannot arrive at the percentage figure unless you ultimately multiply by 100.

Both the SANFL and the AFL are correct in how they measure percentage. The word 'percent' means 'per hundred'. The SANFL measures a team's score 'per hundred' of the combined score from both teams. The AFL measures a team's score 'per hundred' points that the opposition scores. It all depends on how you look at it I guess.

Don't confuse the issue with logic

I don't like the AFL's method of figuring percentage. I think the only reason they do it that way is as part of their "bigger is better" sensationalised approach to everything about the game. It is the same as awarding 4 points for a win and two for a draw! Why the hell award double points for everything? If they were in charge of soccer I guess every goal would be worth 2 points! Then they have 50 meter penalties, which is three times larger plus another third than the sensible 15 that was once awarded. 3 bloody field umpires? Where is the grey matter buggering off to every time they come up with any of these ideas?

Adelaide Hawk wrote:
So ... how do they get to a percentage of i.e. 62.45 if they don't multiply by 100?

Copied and pasted from the Power from Port website:

This is the formula used to calculate the SANFL ladder
Total points For is divided by total points For and Against X 100
Example: 870 pts For divided by pts For 870 and Against 692 (1562) = .55697 X 100 = 55.70%

Qute easily, you've answered your own question .55697 is 55.697%, if you times it by a hundred its 5569.7%.
1 = 100%
.5 = 50%

A percentage is a fraction of a whole.

.5 of an apple is 50% of an apple.
50 apples is 50 apples.

No offence to you AH but the "Multiply X 100" factor is merely there for those who don't understand percentages.

Wedgie wrote:

Adelaide Hawk wrote:
So ... how do they get to a percentage of i.e. 62.45 if they don't multiply by 100?

Copied and pasted from the Power from Port website:

This is the formula used to calculate the SANFL ladder
Total points For is divided by total points For and Against X 100
Example: 870 pts For divided by pts For 870 and Against 692 (1562) = .55697 X 100 = 55.70%

Qute easily, you've answered your own question .55697 is 55.697%, if you times it by a hundred its 5569.7%.
1 = 100%
.5 = 50%

A percentage is a fraction of a whole.

.5 of an apple is 50% of an apple.
50 apples is 50 apples.

No offence to you AH but the "Multiply X 100" factor is merely there for those who don't understand percentages.

But AH is mathematically correct

Agree that the SANFL method is correct. Not that it makes any difference. Places on the table would be the same for both methods. Maybe it'c cause in the AFL the always give 110%

doggies4eva wrote:

Wedgie wrote:

Adelaide Hawk wrote:
So ... how do they get to a percentage of i.e. 62.45 if they don't multiply by 100?

Copied and pasted from the Power from Port website:

This is the formula used to calculate the SANFL ladder
Total points For is divided by total points For and Against X 100
Example: 870 pts For divided by pts For 870 and Against 692 (1562) = .55697 X 100 = 55.70%

Qute easily, you've answered your own question .55697 is 55.697%, if you times it by a hundred its 5569.7%.
1 = 100%
.5 = 50%

A percentage is a fraction of a whole.

.5 of an apple is 50% of an apple.
50 apples is 50 apples.

No offence to you AH but the "Multiply X 100" factor is merely there for those who don't understand percentages.

But AH is mathematically correct

Crikey, I couldn't have made it much simpler to show that he's 100 times out in the post you quoted!
I give up!

Wedgie wrote:Crikey, I couldn't have made it much simpler to show that he's 100 times out in the post you quoted!
I give up!

He right you're wrong Nyah, nyah

Adelaide Hawk wrote:Example: 870 pts For divided by pts For 870 and Against 692 (1562) = .55697 X 100 = 55.70%
You cannot arrive at the percentage figure unless you ultimately multiply by 100.

What do you think .55697 is Adelaide Hawk??? It is 55% (or may be rounded off to 56%) Surely you don't need to multiply that figure by 100, to work that out??

Punk Rooster wrote:

Adelaide Hawk wrote:Example: 870 pts For divided by pts For 870 and Against 692 (1562) = .55697 X 100 = 55.70%
You cannot arrive at the percentage figure unless you ultimately multiply by 100.

What do you think .55697 is Adelaide Hawk??? It is 55% (or may be rounded off to 56%) Surely you don't need to multiply that figure by 100, to work that out??

OK I'll go over it SLOWLY.

.55 is out of 1 and 55% is out of 100 (True .55 is 55% of 1) but 1 isn't the same as 100. Anyone who thinks it is please send me $100 note and I will send them $1 as equal payment.

So to convert a decimal into a percentage you have to muliply by 100. All of you maths hot-shots might already know that and not think it worth mentioning but IT IS A FACT.

Now its me

Thank god the season starts soon

i think its funny a doggy supporter even attempts it