Hello stats community,
I have a Q-Q plot for my stock returns with a sample of n=262. I drew the plot with qqnorm and qqline(qtype=8). Most of the returns, except for 3 outliers, tend to follow the normal line.
However, when I perform the Shapiro Wilk test, I get a p-value of 0.003197, telling me that I can reject the null-hypothesis that my returns are drawn from a normal distribution.
Test Results: STATISTIC: W: 0.983 P VALUE: 0.003197
Am I missing something? Should I follow my observations or trust the SW test?