Filtering Lotto for Even/Odd Sums

Even/Odd Sums:  A Lotto Filter That's Often Overlooked.

One Lotto filter that is often overlooked, but which makes a significant reduction in the playing cost, is the "Even/Odd Sums" filter.

With this filter, typically your playing cost is reduced by about one-half.

Like all filters, it's a way to control the cost by keeping just the kinds of combinations you want to play, and eliminating the kinds you don't want.

Note that this filter is not the same as the "Even/Odd Numbers" filter.

• The "Even/Odd Numbers" filter works on the amount of Even and Odd numbers in a line.

  Example: The combination  3 4 27 31 41 44  has 2 Even numbers and 4 Odd numbers.




• The "Even/Odd Sums" filter works solely on the Sum of the numbers in each line.  It treats the Sum as an Even amount or Odd amount.

  Example: The combination  3 4 27 31 41 44  has a Sum of 150 -- an Even amount.

It's a simple filter. Obviously each winning combination has a Sum which is either an Even amount or an Odd amount (150, 151, etc). The distribution of Even/Odd Sums in any game is nearly 50/50 percent (not exactly, but very close).

If one limits the wheeled combinations to those only with an Even Sum, or those only with an Odd Sum, the playing cost is reduced by nearly one-half.

If the winning combination matches your filtering, and it meets your wheel's matching requirement, then you have the win that your wheel was designed to provide. Your playing cost is about one-half of what it would be with the same wheel, when not using this filter. If you are wrong with this filter, the exact winning combination cannot be among your combinations (but you could still have lower prizes).

The natural question is, 'How could I guess at the kind of E/O Sum to play next?'

An Example

Here is an example of the Even/Odd Sums in a Lotto game.

It's taken from the Florida 6/49 game, with 537 drawings. Check your own game to see how it compares.

This summary shows the game's history of change in the Even/Odd state of the Sum. It shows how the Sum has been changing -- from Even to Odd, or from Odd to Even.

What the Data Shows

In the table below:

(1) An "Immediate Change" occurred when the Sum had been Odd or Even for exactly one draw, and then it immediately changed to the other state in the next draw.

(2) A "Change after 2 Draws" occurred when the Sum had remained Odd or Even for exactly two consecutive draws, and then it changed to the other state in the third draw.

(3) A "Change after 3 Draws" occurred when the Sum had remained Odd or Even for exactly three consecutive draws, and then it changed to the other state in the fourth draw.

Here is the history:

Ref.	Kind of Change	How Often It Happened	Correct Choice
(1)	Immediate Change	154 times (154 draws of 537)	154 of 285 plays (54% of plays)
(2)	Change after 2 Draws	64 times (128 draws of 537)	64 of 131 plays (48% of plays)
(3)	Change after 3 Draws	42 times (126 draws of 537)	42 of 67 plays (62% of plays)
(4)	Change after 4...9 Draws	25 times (129 draws of 537)	- -

Here is how to interpret this information.

Refer to lines (1), (2), (3), and (4) in the table above.

(1) If you played the 'opposite' Sum in the next draw immediately after a change in the Sum's state:

• You would have had 285 plays (you must include all of the plays in (1) through (4)).
• You would have been 'correct' in 154 of those 285, or about 54% of your plays.

(2) If you played the 'opposite' Sum in the next draw after a 'run' of 2 draws with Sums that were alike (both Even or both Odd):

• You would have had 131 plays (including all of the plays in (2) through (4)).
• You would have been 'correct' in 64 of those 131, or about 48% of your plays.

(3) If you played the 'opposite' Sum in the next draw after a 'run' of 3 draws with Sums that were alike (three Even, or three Odd):

• You would have had 67 plays (including all of the plays in (3) through (4)).
• You would have been 'correct' in 42 of those 67, or about 62% of your plays

(4) Runs of 4 or more draws do not happen often enough to give useful statistics.

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Even/Odd Sums filtering is one of the standard filtering methods in the Lottery Director Lotto software. The software shows the history of Even/Odd Sums, and the player chooses the filter with one click of the mouse.

One of the most enjoyable aspects of Even/Odd Sums filtering is that it's so easy to do. And again, it cuts your wheeling cost to about half.

CDEX