outliers - w3toppers.com

Identifying statistical outliers with pandas: groupby and reduce rows into different dataframe

get the mean and std. We need to loop over each column, get the mean and std, then set the max and min value we accept for this column. # Storring mean and std for every col as a tuple, 0 index for max value, # and 1 for min value outliers = [] for … Read more

Detect and exclude outliers in a pandas DataFrame

If you have multiple columns in your dataframe and would like to remove all rows that have outliers in at least one column, the following expression would do that in one shot. df = pd.DataFrame(np.random.randn(100, 3)) from scipy import stats df[(np.abs(stats.zscore(df)) < 3).all(axis=1)] description: For each column, it first computes the Z-score of each value … Read more