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Suppose you collect lots of data on a given ticker for a single day with a large sample size and obtain a statistically significant signal. Is this sufficient to end the experiment and conclude your signal is valid?

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quant-research
data-analyst
Technical

For answering this question, focus on the concepts of sample size, statistical significance, time frame, and the potential impact of external variables that could affect the robustness of your signal over time. Highlight how ongoing testing and validation is crucial for confirming the signal's consistency and reliability before making a definitive conclusion.

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