Kelly Criterion bankroll question

[binions]

[Cross post on probability forum]

I understand KC is edge/odds. I have a question as to how it applies to what to buy in for at a poker game (as a percentage of bankroll).

Assume I win 60% of my sessions, and lose 40% in a given game. Is my edge 20% (60-40), or 50% (40 * 1.5 = 60) or some other number?

Assume my average win is twice my average loss, and my average session is +40% of my normal buy in. Are my odds 2:1 or 1.4:1 (assuming I only bring 1 buy in) or some other number?

What if I win 45% of sessions and lose 55%, but my average win is 3x my average loss and my average session 50% of my normal buy in? What would KC say my buy in should be as a percentage of bankroll?

Many thanks.