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Medium · Statistics & Regression · Quant Trader interview question · statistics, hypothesis-testing, kolmogorov-smirnov, goodness-of-fit
You are analyzing the returns of a new trading strategy and want to assess whether they follow a normal distribution. You decide to use the Kolmogorov-Smirnov (KS) test to compare the empirical cumulative distribution function (ECDF) of the returns to the cumulative distribution function (CDF) of a normal distribution. What does the KS test statistic fundamentally measure?