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Which of the below describes a hold - out sample: demonstrating a profitable strategy and excluding the ones that didn't work data set from 2

Which of the below describes a hold

-

out sample:

demonstrating a profitable strategy and excluding the ones that didn't work

data set from

2010 - 2022

and excluding

2023 - 2024

searching for a predictive relation in a database

holding out on publishing the relationship to preserve alpha

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