How much of poker is luck?

[TexArcher]

There is no way to answer this question with anything but an opinion, it's not a quantifiable thing.

[AaronBrown]

It depends. One hand is all luck, in a lifetime of play luck is only a minor factor.

Over 100 hands, a typical good player might have a standard deviation equal to 10 times their expected win rate. So over 10,000 hands, you could say luck and skill are about equally important. But this depends on the skill of the players and the game type.

Games with high blinds and antes relative to stacks and limits increase the importance of luck. This is true in late stages of tournaments for example.

No limit games increase the importance of luck in the sense that results are determined by fewer hands than in limit play. On the other hand, no limit also increases the scope for skill.

Good players increase the importance of skill, bad players make luck more important (which helps them).

[donkeyradish]

I don't believe this question is answerable.

At a table of players of equal ability (ie. all playing identically) the skill factor is 0% and the luck factor is 100%, and it makes no difference if they are World Champions or novices.

Introduce 1 stronger or weaker player to the table and that completely changes.

Depends on the blinds, starting chips, time bewteen the blinds and so on. The shorter the game, luck increases.
Outside of that, I find most people who lose alot claim its all luck. And, when and someone tells me it was all luck, I thank them very much. It tells me they don't know how to play