Most találtam, tetszik, mert lolkingen néztem rankeden a 10 meccsen eddig 4.1 vagyok, amit lehet látni meccseket azokat meg összeszámoltam és 3.9 (botos costom nélkül), elméletben hasznos vagyok a csapat számára
Egyébként nem faszlengetés, csak alapból jó az iromány!
A KDA ratio, or Kills/Deaths/Assists ratio, is a measure to determine how much value each of your deaths have. For example, if you have a 3.0 KDA, you're effectively contributing 3 points per one death to your team. The higher your KDA the more you're contributing to your team as opposed to the other team.
It is by no means the only way to assess a player's performance, as there are factors it doesn't take into account (like how many dragons you've killed, or how well you've warded throughout the game for your team, or how many turrets you've destroyed), but it is generally one the best way to assess overall performance.
KDR is not a good alternative as it does not account for assists which make up the bulk of contribution from particular roles such as support or tank (or even jungle and top sometimes), who's jobs or capabilities are not to get kills but to assist the carries in getting kills. There are even instances where one person might do the most damage onto the opponent but someone else gets the killing blow, KDR would not account for this.
CS is relevant during the game but has absolutely nothing to do with assessing a players performance at the end of a game. CS is only a tool for gold gain to get the items that are supposed to help you perform better. Don't misunderstand this, CS during the game is incredibly important to get the items you need, but at some point it's supposed to translate into better performance, hence higher KDA. If you get a bunch of CS and don't perform as a result then all that CS was useless.
Considering general statistics, good averages to go buy are the following:
0.0~0.9 = Bad (Contributing to the opposing team more than your own)
1.0~1.9 = Poor (Contributing to the opposing team more than your own)
2.0~2.9 = Average (Contributing an equal amount to both sides)
3.0~3.9 = Good (Contributing to your own team more than theirs)
4.0 (& up) = Excellent (Contributing to your own team more than theirs)
The funny thing is, once people understand this, they begin to understand the value of a death and how getting kills isn't the only thing that matters. A score of 15-13-5 is not a good score, you have basically fed the other team as much as you've killed them. A score of 8-2-5 is a much better score. Although you've gotten half the kills you've also given the enemy 11 less deaths worth of gold, which in the long run contributes to your team much more than the previous score. This is why going in for one kill when you know you're going to die afterwards is one of the worst decisions you can make as a LoL player, and not enough people understand that. A 1 for 1 is not good, unless it's first blood.
The further you delve into how the mechanics of the game work the more you realize what you should prioritize (If that ward will help me prevent 2 deaths in the next 5 minutes, it's much more important then that item in my build order that will help me get 1 kill in the next 5 minutes - type thing). I don't wish to stray off topic too much though, so I'll leave it at that.