I spent eighteen months working for a quantitative hedge fund. So we were using financial data—that is accounts, stock prices, things that are inherently numerical. (Not like, say, defining employee satisfaction.) And we got the data from dedicated financial data vendors, the majority from a single large company, who had already spent lots of effort to standardise it and make it usable. We still spent a lot of time on data cleaning.
I spent eighteen months working for a quantitative hedge fund. So we were using financial data—that is accounts, stock prices, things that are inherently numerical. (Not like, say, defining employee satisfaction.) And we got the data from dedicated financial data vendors, the majority from a single large company, who had already spent lots of effort to standardise it and make it usable. We still spent a lot of time on data cleaning.