Quartile
/ˈkwɔːrtaɪl,ˈkwɔːrtl/
Definition 1 of 2
Pro Tip 1/3Equal Divisions
The word quartile refers to dividing data into four equal parts, ensuring uniform distribution.
Each quartile contained 25 students when the class was segmented by test scores.
Pro Tip 2/3Positional Terms
Quartiles are often specified as 'lower', 'middle', and 'upper' to denote their positions in the data set.
The middle quartile is also known as the median in a data set.
Pro Tip 3/3Data Spread
Quartiles help describe the spread of values, showing how they're distributed across the dataset.
The wide range in the upper quartile indicates high variance among top scorers.
Compare with
Percentile
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