Are you using a high quality pseudo-random number generator? Are you using different seeds to start the sequence? How many have you used? Are you getting long sequences to test? How long is your sequence? Do you know which rng you are using? E.g., at least at one time, SPSS, SAS, and IMSL used 397204094 as the multiplier since it gave a long period before the sequence was repeated. If you are using a package are you using a uniform option? Are you doing some transform of the uniform random numbers, either directly or by specifying
Art [EMAIL PROTECTED] Social Research Consultants University Park, MD USA (301) 864-5570 Konrad Den Ende wrote: > We've created a vector with random numbers and took a look at the number of > raising sequences in it. Normally, one would expect to get about 1/2 of all > the sequences occured to be of length 1, about 1/4 of length 2, about 1/8 of > length 3 and so on. > Everything works as expected except for the sequences of length 2. No matter > how much we grunt at the machine, it always gets to few of those. All the > others are about the right size, though. > Anybody who'd like to contribute and shed some light at this phenomenon? > > . . ================================================================= Instructions for joining and leaving this list, remarks about the problem of INAPPROPRIATE MESSAGES, and archives are available at: . http://jse.stat.ncsu.edu/ . =================================================================
