Back to Community
Sample Size

Hi I m just learning about stats and probability, I have a question that s confusing me.

I had back test a strategy on a few stocks, but due to the nature of the strategy I don t get enough entry, so my idea is to back test my strategy on let s say all the stocks in the SP500 .
If I do that, can I trust the back test results to apply on average in singles stocks? and can I trade just a few stocks and expect results close to the back test ? ( of course according to market behavior)

Please any Idea?