probability of repeated combinations

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I'm considering combinations of 3 coin flips. we get 8 combinations.



Probability 1 of 8 combinations = 1/8 = 0.125.



It is expected that 1 combination will fall 3 times in a row = 0,125 * 0,125 * 0,125 = 0,0019.



Am I right ?



Calculator "The number of tests to get a certain number of events", believed that for the appearance of this series, the number of times necessary is: minimum 525, maximum 1052 test. Is the standard deviation included?



As far as I understand, the test consists of 3 flips, the result should be multiplied by 3 to get the number of single flips?



The probability A of the combination is 1/8 = 0.125.
The probability B of the combination is 1/8 = 0.125.
The probability of combinations A, B in any sequence (AAA; BBB; ABA ...) = (0,125 * 2) = 0,25 ^ 3 = 0,015?




probability-theory




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  • If by "combination" you mean a fixed sequence of $3$ outcomes, then yes, the probability is $1/8$ and the probability that it occurs $3$ times in a row is $1/8^3-1/512$ I don't understand the paragraph starting "Calculator" at all. What is the "Calculator?" What exactly are you trying to calculate?
    – saulspatz
    Jul 29 at 16:34











  • "Calculator?"=computation program
    – vovan
    Jul 29 at 17:00














up vote
0
down vote

favorite












I'm considering combinations of 3 coin flips. we get 8 combinations.



Probability 1 of 8 combinations = 1/8 = 0.125.



It is expected that 1 combination will fall 3 times in a row = 0,125 * 0,125 * 0,125 = 0,0019.



Am I right ?



Calculator "The number of tests to get a certain number of events", believed that for the appearance of this series, the number of times necessary is: minimum 525, maximum 1052 test. Is the standard deviation included?



As far as I understand, the test consists of 3 flips, the result should be multiplied by 3 to get the number of single flips?



The probability A of the combination is 1/8 = 0.125.
The probability B of the combination is 1/8 = 0.125.
The probability of combinations A, B in any sequence (AAA; BBB; ABA ...) = (0,125 * 2) = 0,25 ^ 3 = 0,015?




probability-theory




share|cite|improve this question





















  • If by "combination" you mean a fixed sequence of $3$ outcomes, then yes, the probability is $1/8$ and the probability that it occurs $3$ times in a row is $1/8^3-1/512$ I don't understand the paragraph starting "Calculator" at all. What is the "Calculator?" What exactly are you trying to calculate?
    – saulspatz
    Jul 29 at 16:34











  • "Calculator?"=computation program
    – vovan
    Jul 29 at 17:00












up vote
0
down vote

favorite









up vote
0
down vote

favorite











I'm considering combinations of 3 coin flips. we get 8 combinations.



Probability 1 of 8 combinations = 1/8 = 0.125.



It is expected that 1 combination will fall 3 times in a row = 0,125 * 0,125 * 0,125 = 0,0019.



Am I right ?



Calculator "The number of tests to get a certain number of events", believed that for the appearance of this series, the number of times necessary is: minimum 525, maximum 1052 test. Is the standard deviation included?



As far as I understand, the test consists of 3 flips, the result should be multiplied by 3 to get the number of single flips?



The probability A of the combination is 1/8 = 0.125.
The probability B of the combination is 1/8 = 0.125.
The probability of combinations A, B in any sequence (AAA; BBB; ABA ...) = (0,125 * 2) = 0,25 ^ 3 = 0,015?




probability-theory




share|cite|improve this question













I'm considering combinations of 3 coin flips. we get 8 combinations.



Probability 1 of 8 combinations = 1/8 = 0.125.



It is expected that 1 combination will fall 3 times in a row = 0,125 * 0,125 * 0,125 = 0,0019.



Am I right ?



Calculator "The number of tests to get a certain number of events", believed that for the appearance of this series, the number of times necessary is: minimum 525, maximum 1052 test. Is the standard deviation included?



As far as I understand, the test consists of 3 flips, the result should be multiplied by 3 to get the number of single flips?



The probability A of the combination is 1/8 = 0.125.
The probability B of the combination is 1/8 = 0.125.
The probability of combinations A, B in any sequence (AAA; BBB; ABA ...) = (0,125 * 2) = 0,25 ^ 3 = 0,015?





probability-theory





share|cite|improve this question












share|cite|improve this question




share|cite|improve this question








edited Jul 29 at 16:56
























asked Jul 29 at 15:19









vovan

62




62











  • If by "combination" you mean a fixed sequence of $3$ outcomes, then yes, the probability is $1/8$ and the probability that it occurs $3$ times in a row is $1/8^3-1/512$ I don't understand the paragraph starting "Calculator" at all. What is the "Calculator?" What exactly are you trying to calculate?
    – saulspatz
    Jul 29 at 16:34











  • "Calculator?"=computation program
    – vovan
    Jul 29 at 17:00
















  • If by "combination" you mean a fixed sequence of $3$ outcomes, then yes, the probability is $1/8$ and the probability that it occurs $3$ times in a row is $1/8^3-1/512$ I don't understand the paragraph starting "Calculator" at all. What is the "Calculator?" What exactly are you trying to calculate?
    – saulspatz
    Jul 29 at 16:34











  • "Calculator?"=computation program
    – vovan
    Jul 29 at 17:00















If by "combination" you mean a fixed sequence of $3$ outcomes, then yes, the probability is $1/8$ and the probability that it occurs $3$ times in a row is $1/8^3-1/512$ I don't understand the paragraph starting "Calculator" at all. What is the "Calculator?" What exactly are you trying to calculate?
– saulspatz
Jul 29 at 16:34





If by "combination" you mean a fixed sequence of $3$ outcomes, then yes, the probability is $1/8$ and the probability that it occurs $3$ times in a row is $1/8^3-1/512$ I don't understand the paragraph starting "Calculator" at all. What is the "Calculator?" What exactly are you trying to calculate?
– saulspatz
Jul 29 at 16:34













"Calculator?"=computation program
– vovan
Jul 29 at 17:00




"Calculator?"=computation program
– vovan
Jul 29 at 17:00















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