Susan asks…Can I use a t-test if my sample sizes are > 100?I have daily trending data and want to determine if there is a correlation between data before a point and after a point. For example, I might have two years worth of data on the value of a stock. One month ago a press release is issued about that stock and now I have one month worth of stock values for that same stock.
I want to determine if that press release had a significant impact on the stock price but since I have degrees
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