A quartile is a statistical term that refers to the values that divide a data set into four equal parts, each containing 25% of the data points. The first quartile (Q1) marks the 25th percentile, the second quartile (Q2) is the median or 50th percentile, and the third quartile (Q3) represents the 75th percentile. Quartiles are essential for understanding the spread and distribution of data within a dataset, providing insights into its variability and central tendency.
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