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Coin Tossing Activity

One of the following is a real sequence of 200 tosses of a fair coin. The other sequence was made up. (Both sequences were generated by students in my Chance course in Winter 1997). Which do you think is real and which do you think is imaginary?


HTHHTTTTHHTHHHTHTTTHHTTTHTTTHHTTHTHHTHTTHHTHHTTHHT
TTHHTTHHHTHHTTHTTHHTTTTHHTTHHTHTTHHTHTTHHTHTHHHTHH
THHTTTHHTHHTTTHTHTHHTHTTHHTTTHHHTHTTHTHHTHTTHTTHTT
TTHHTHTTHTHHHHTHTTHHTHTTTHHTHTTHHTHTTHTHHTTHTHTTHH

TTHHHHHTHTHHHHHTTTTHHHTHTHTTTTTHTTTTHTHTTHHTHTTTTH
THHHTHTHTTHHTTHHTTHTHTTHHHTTTHHTTHTTHHHHHHHHTTHHTH
HTHHHHHTHHHTTTHTHHTHTTTTHHTTTHTTTHHTTHHHHHHTHTHHHT
TTTHTTHHHTHHHHHHHTTHTTTTTHTTHTHHTTTTTTHTHTHTTHTHTT

 
Click here to see the results from the sequences you generated in class, and my attempt to classify them. You may recall that this activity was described in the Benford's Law article we read earlier in the semester!