Winning at KENO: Calculating the Expected Value (E(n))

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SUMMARY

The discussion centers on calculating the expected value (E(n)) in the game of KENO, specifically using the formula E(n) = Ʃ p(n) × a(n), where p(n) represents the probability of getting i matches and a(n) denotes the winnings for i matches. The user seeks clarification on the expected value for 40 chosen numbers and the corresponding winnings for specific match counts (a(20), a(21), etc.). It is noted that the question lacks sufficient data regarding the number of chosen numbers and their matches, leading to assumptions about the expected value calculations.

PREREQUISITES
  • Understanding of probability theory, specifically in the context of games of chance.
  • Familiarity with KENO game mechanics and payout structures.
  • Basic knowledge of mathematical summation notation and expected value calculations.
  • Ability to interpret statistical data related to gambling outcomes.
NEXT STEPS
  • Research KENO payout tables to understand the winnings for various match counts.
  • Study probability distributions relevant to KENO to calculate p(n) accurately.
  • Learn about expected value calculations in gambling scenarios to apply E(n) effectively.
  • Explore statistical software or tools that can assist in simulating KENO outcomes.
USEFUL FOR

Mathematicians, statisticians, gamblers, and game developers interested in the probability and expected value calculations in KENO and similar games of chance.

sam_0017
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game of KENO ?

can anyone help whit this question ?

[PLAIN]http://up.arab-x.com/Oct11/doY59204.png


E(n) = Ʃ p(n) × a(n)
" represent the probability you get i matches as P(i), the amount you win for i
matches as A(i) and the expected value for n numbers picked as E(n)."
 
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sam_0017 said:
can anyone help whit this question ?

E(n) = Ʃ p(n) × a(n)
" represent the probability you get i matches as P(i), the amount you win for i
matches as A(i) and the expected value for n numbers picked as E(n)."

E(40)? what's a(20) , a(21), etc. ? also i think the question is not complete , given data is not sufficient (for eg. with what (and how many ) numbers the chosen numbers are matched )
 
Last edited:


I'm assuming for the moment that you know how to calculate the probabilities for the numbers of matches. I suspect what the author is calling "E(40)" is the expected value of your winnings for this 40-choice version of the game, not the probability of up to 40 matches (which happens only a little sooner than the heat-death of the Universe... ;) ). Is it the case that the other problem (which I'm guessing is related to basic Keno) asks for "E(20)" ?
 

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