To make things more interesting, I will reopen after the first and second comics to allow people to bet using this new information, as long as there are no questions regarding how one of the questions should resolve.
I will resolve any answers to these questions as soon as I have time to resolve and the result has become clear. If an answer is potentially ambiguous, I will wait to see thoughts posted on explain xkcd, and will either resolve or conclude N/A based on the possible consensus there.
Others are free to add options. I will delete duplicates and ask regarding resolution criteria for potentially vague options, or questions that I am not sure how to resolve. If you believe that there is potentially a vague option, feel free to comment so we can address the issue as early as possible.
I may bet in this market, but do not bet on questions about myself. On debatable questions, I will ask for trader input, and will put my reasoning once I come to a conclusion.
1,000
3.00@santiago the odds were too high for the likelihood of the sum of digits being even. I might be wrong, but I thought the odds were closer to 50%.
@Pericles @santiago I have that the current sum is even. So, I would imagine that the likelihood is a little higher than 50% (most comics have at least one digit, and assume that for those that do, it's a coinflip). Odds definitely seemed too high before @Pericles bet, but betting it down to 31% was quite a bit.
@EBurk my reasoning was the same as you (some likelihood of not having digits, 50/50 chance of even/odd if it does have digits), but my calculations from counting how many of the most recent comics had any digits in them came out to around 77% for a single comic to have an even sum (i.e. I counted slightly more comics without digits than with digits; that might only be a recent trend though).
@EBurk Yeah, I don't know either. Thank you for making these markets by the way, they're really fun :)