answers.input_text: short
answers.span_text: an observation point that is distant from other observations
questions: what are the outliers in a data set
name: Outlier
contexts: In statistics , an outlier is an observation point that is distant from other observations . An outlier may be due to variability in the measurement or it may indicate experimental error ; the latter are sometimes excluded from the data set . An outlier can cause serious problems in statistical analyses .