Question: Outliers are values that vary abnormally from the rest of the values in a pool of values. When performing data analysis, it is sometimes useful to exclude outliers. One method of removing outliers is removing any value that has a z-score greater than 3 or less than -3. Create a function 'ro' that removes outliers from the given vector using the aforementioned technique.
q)volume:300 400,100?100j q)count volume 102 q)count ro[volume] 100