The TEST DEPT
Mr Oops Roulette site ~ TESTS: Various tests performed with close to 370,000 recorded spins
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This page was UPDATED at Jan 1 2001


Trying to

FOLLOW THAT BET!

(or maybe not)


Introduction:

Paul, my eastern friend, asked me about the selection rules "Bet the Last outcome", "The one Before Last" and their reversed versions. How would they perform over the long haul with continous spins? I guess many wonder the same so I made the test for all of you. But before that, let's have some theory...

To bet the Last outcome is to follow an immediate trend - you bet that the last outcome will repeat immediately. The advantage of this rule is that it "adopts" very quickly to a new sequence (of your preferred selections) - the longer the sequence is the more hits you will get. The dis-advantage is that it cannot "adopt" at all to a sequence like R-B-R-B-R-B. This is a zero-hit sequence for this rule.

The Reversed Last means just that; you bet that the last outcome will NOT repeat, thus betting the opposite. The advantage is its excellent handling of sequences like R-B-R-B-R-B but the dis-advantage is that it can ONLY handle that. As soon as you have repeating outcomes it will lose.

You can also bet the one Before Last. This means that you in a case of a Red - Black situation bet Red at the next spin as Red was before Black - the last outcome. Here, the advantage is that it too, like Reversed Last, handles R-B-R-B-R-B with a hit on every spin. But that's all, as the dis-advantage is that a sequence like R-R-B-B-R-R-B-B will be completely missed because it needs the two spins to "adopt" to the sequence and then it changes. It will, though, hit better the longer the sequence is.

The fourth method is the Reversed Before Last, where you bet the opposite of the Before Last. The advantage with this method is that it handles R-R-B-B-R-R-B-B but the dis-advantage is that it completely misses R-B-R-B-R-B. It is, really, the revesed of the Before Last.

Now you know the advantages and dis-advantages of all of them. No single one will ever win, it seems, as they all hit different to eachother. To compare, I also bet alternating bets, like Red-Black-Red-Black... at the same spins where the systems were used. As the Last (and Reversed Last) system doesn't start at the same spin after a zero as the Before Last (and its reversed version), two different results were found.

To be as complete as possible, I also counted every sequence of hits and filed them by length. The resulting four tables (one for each system - the alternating bets were not checked) are also found below.

UPDATE: After publishing, Paul asked me why the "normal" result is not exactly the opposite of the "reversed" result. It took me some time to figure out how to explain - you can read my answer by clicking here (separate browser).

Paul also wondered what the results would be if all zeroes were deleted before the test, so I ran the same test again ignoring all zeroes. The tables are published at a separate page, click here to read!

(Please remember that these figures reflect only the files used)


TRYING TO FOLLOW THAT BET...
Copyright © 2000 by XerxX
Number of continous SPINS: 362,021
Number of ZEROS:             9,731
Number of BETS:            352,288
(All betting started at the THIRD spin in order to let BL and RBL complete the recording)

HIT TABLE                 Red/Black  Low/High  Even/Odd      Total     Hit%
-----------------------------------------------------------------------------
Bet: LAST                     171,353   171,677   171,240    514,270   48.660
     REVERSED LAST            171,465   171,141   171,578    514,184   48.652
     ALTERNATE while L/RL     171,336   171,576   171,285    514,197   48.653

     BEFORE LAST              171,243   171,431   171,601    514,275   48.660
     REVERSED BEFORE LAST     171,597   171,409   171,239    514,245   48.658
     ALTERNATE while BL/RBL   171,347   171,567   171,204    514,118   48.646

SEQUENCES TABLES
These tables show the total number of hit-sequences of
each length that occurred while running the above test.

Betting LAST
Lth   Rd/Bk   Lw/Hh   En/Od
---------------------------
  1   45236   45090   45210
  2   22029   21884   21915
  3   10787   10801   10705
  4    5100    5187    5166
  5    2587    2619    2576
  6    1179    1214    1208
  7     579     584     595
  8     298     284     302
  9     147     154     134
 10      69      73      70
 11      36      23      25
 12      20      19      19
 13       3      12       9
 14       7       7       5
 15       2       2       4
 16       1       3       0
 17       0       0       1
 18       0       0       1
 20       1       0       1


Betting REVERSED LAST
Lth   Rd/Bk   Lw/Hh   En/Od
---------------------------
  1   45221   45373   45053
  2   21982   21842   21805
  3   10748   10712   10962
  4    5281    5094    5248
  5    2508    2582    2522
  6    1225    1236    1203
  7     582     592     577
  8     317     273     310
  9     132     148     145
 10      52      56      75
 11      28      49      28
 12      17      20      15
 13       8       8       8
 14       4       3       2
 15       1       1       1
 16       1       3       0
 17       0       1       0
 20       0       1       0


Betting BEFORE LAST
Lth   Rd/Bk   Lw/Hh   En/Od
---------------------------
  1   48625   48288   48404
  2   21535   21514   21667
  3   10381   10281   10414
  4    5095    5201    5098
  5    2404    2450    2411
  6    1161    1176    1172
  7     615     557     612
  8     279     302     279
  9     121     129     145
 10      64      72      53
 11      37      39      34
 12      11      20      17
 13      11      10       7
 14       3       3       5
 15       2       6       0
 16       0       1       1
 17       0       0       1
 19       1       1       1


Betting REVERSED BEFORE LAST
Lth   Rd/Bk   Lw/Hh   En/Od
---------------------------
  1   48604   48490   48502
  2   21475   21235   21457
  3   10331   10408   10479
  4    5061    5109    4986
  5    2526    2520    2453
  6    1194    1243    1142
  7     581     572     586
  8     283     276     291
  9     131     141     147
 10      60      64      81
 11      28      24      38
 12      29      12      15
 13       7       7       3
 14       4       2       2
 15       2       3       2
 16       2       0       4
 17       0       1       0
 18       2       0       0
 19       0       1       0
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