In this context, outliers are data observations that are distant from other observations. There are a number of reasons why variability may exist in the data that you are working on during your analysis. Outliers may cause serious problems in your efforts as a Data Scientist.

If you are interested in learning about the manual method of detecting outliers look at this video:

detect outlier graphpad detect outliers java detect outliers rapidminer detecting contiguous outliers in the low-rank representation detecting data outliers detecting graph-based spatial outliers algorithms and applications detecting multiple outliers detecting multivariate outliers in r detecting multivariate outliers in spss detecting outlier samples in microarray data detecting outliers detecting outliers boxplot detecting outliers cook's distance detecting outliers do not use detecting outliers example detecting outliers excel detecting outliers in a data set detecting outliers in anova detecting outliers in categorical data detecting outliers in clustering detecting outliers in data detecting outliers in eviews detecting outliers in excel detecting outliers in excel 2010 detecting outliers in frontier models a simple approach detecting outliers in gamma distribution detecting outliers in high-dimensional datasets with mixed attributes detecting outliers in jmp detecting outliers in linear regression detecting outliers in logistic regression detecting outliers in multivariate data detecting outliers in non normal data detecting outliers in python detecting outliers in r detecting outliers in regression analysis detecting outliers in sas detecting outliers in sas part 1 detecting outliers in skewed data detecting outliers in spss detecting outliers in stata detecting outliers in time series data detecting outliers in time series data in r detecting outliers mad detecting outliers matlab detecting outliers meaning detecting outliers multiple regression detecting outliers multivariate detecting outliers non normal data detecting outliers of high-dimensional biological data detecting outliers pandas detecting outliers panel data detecting outliers pdf detecting outliers ppt detecting outliers python detecting outliers regression detecting outliers regression spss detecting outliers sas detecting outliers spss detecting outliers standard deviation detecting outliers stata detecting outliers statistics detecting outliers time series detecting outliers using cook's distance detecting outliers using iqr detecting outliers using mahalanobis distance detecting outliers using r detecting outliers using sas detecting outliers using spss detecting outliers using standard deviation detecting outliers using stata detecting outliers using transduction and statistical testing detecting outliers using z-scores detecting outliers when fitting data with nonlinear regression detecting outliers with grubbs' test detecting outliers with mahalanobis distance detecting outliers with r detecting outliers with standard deviation detecting outliers with z score detecting outliers z score detecting spatial outliers with multiple attributes detecting the outliers detection of outliers detection of outliers in linear regression detection of outliers in multivariate data detection of outliers in r detection of outliers in sas detection of outliers in spss detection of outliers in time series detection of outliers in time series data detection of outliers matlab detection outlier curve detection with outliers k outlier detection l outlier detection outlier detect javascript outlier detection and classification outlier detection bayesian approach outlier detection big data outlier detection bivariate outlier detection book outlier detection box plot outlier detection by active learning outlier detection by clustering outlier detection by robust principal components analysis outlier detection by sampling with accuracy guarantees outlier detection c++ outlier detection calculator outlier detection categorical data r outlier detection clustering r outlier detection data mining outlier detection dataset outlier detection deep learning outlier detection definition outlier detection distance-based outlier detection energy consumption outlier detection equation outlier detection evaluation outlier detection example in r outlier detection example python outlier detection exponential distribution outlier detection for categorical data outlier detection for high dimensional data outlier detection for non normal distribution outlier detection for skewed data outlier detection for temporal data outlier detection for temporal data a survey outlier detection for time series outlier detection formula outlier detection gaussian process outlier detection gene expression outlier detection genetic algorithm outlier detection github outlier detection gmm outlier detection golang outlier detection graph outlier detection hierarchical clustering outlier detection high dimensional outlier detection high dimensional data outlier detection histogram outlier detection history outlier detection hmm outlier detection how outlier detection java code outlier detection k means outlier detection kaggle outlier detection kalman filter outlier detection keras outlier detection knime outlier detection knn outlier detection laboratory outlier detection least squares outlier detection linear model outlier detection loci outlier detection lof outlier detection logic outlier detection lognormal distribution outlier detection nearest neighbor outlier detection nearest neighbour outlier detection netflix outlier detection neural network outlier detection non normal outlier detection nonlinear regression outlier detection normal distribution outlier detection numpy outlier detection online outlier detection package in r outlier detection panel data stata outlier detection pca outlier detection percentile outlier detection python code outlier detection quartile outlier detection quora outlier detection r package outlier detection review outlier detection rule outlier detection validation outlier detection variance outlier detection visualization outlier detection wiki outlier detection with kernel density functions outliers detection algorithms outliers detection and treatment outliers detection and treatment in r outliers detection machine learning outliers detection methods in r outliers detection research paper outliers detection sklearn outliers detection techniques outliers detection test r detect outliers multivariate r outlier detection categorical data r outlier detection example r outlier detection iqr r outlier detection methods r outlier detection package r outlier detection regression r outlier detection time series z score approach for detecting outliers z-score method for detecting outliers