The log-odds of an event of probability is the value ofOriginally Posted byaskmemath

, defined as:

,

where the is usually the natural logarithm.

So the log-odds of A are:

and:

.

RonL

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- February 24th 2006, 12:47 PM #1

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## Log

I am trying to understand the calculation of log odds. I'm provided with the following example: 4 out of 5 are A or a .80 probability and 1 out of 5 are T or .20. The possible values are A,T,C or G.

My example indicates that the log odds for A is +1.16 and T is -0.22. I am not able to duplicate this result. Can you explain the steps calculate the log odds from these probabilities?

Thank you.

The funny part is that I am good at individual subjects like Probability by itself or logs by itself So who was the genius who came up with log odds?

- February 25th 2006, 01:15 AM #2

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- February 25th 2006, 09:05 AM #3

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