Need help planning your train watching? I have the answer. A formula that gives me the probabability of a train arrival given:
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the number of trains/day at the site
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the arrival time for the last train
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your travel time to the site
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the time you are willing to wait.
Neat !
At my site the numbers are 50%, 22 .4trains/day, 5 min, 60 min. For 26 trials the results are 14 train arrivals.
Cheers,
rrdr