What is the importance of outliers in data analysis?
Outliers can provide valuable insights, indicating variability in data, potential errors, or novel phenomena.
Can outliers skew the results of statistical analyses?
Yes, outliers can significantly affect measures like mean and standard deviation, leading to misleading conclusions.
How do you identify outliers in a dataset?
Common methods include using Z-scores, IQR (Interquartile Range), or visualizations like box plots.
Should I remove outliers from my data?
It depends on the context. If they are errors, remove them; if they provide insight, consider keeping them.
What are some examples of outliers in real-world data?
Examples include extreme sales figures, unusual weather patterns, or rare medical cases.
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