What are outliers and how do they affect statistical analysis?
Outliers are data points that differ significantly from other observations. They can skew results.
Can you give me an example of how an outlier might affect the mean?
Sure! If you have the data set {2, 3, 4, 5, 100}, the mean is affected by the outlier 100, making it much higher than the median.
What about the median? Does it get affected by outliers?
No, the median is more robust to outliers. In the same data set, the median would be 4, which better represents the central tendency.
How can I identify outliers in my data?
You can use methods like the IQR (Interquartile Range) or Z-scores to identify outliers in your data.
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