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first quartile

American  

noun

Statistics.
  1. (in a frequency distribution) the smallest quartile; the twenty-fifth percentile; the value of the variable below which one quarter of the elements are located.


Example Sentences

Examples are provided to illustrate real-world usage of words in context. Any opinions expressed do not reflect the views of Dictionary.com.

Calculate the median, M, the first quartile, Q1, and the third quartile Q3.

From Textbooks • Mar. 27, 2020

Before a box plot can be graphed, the following data points must be calculated: the minimum value, the first quartile, the median, the third quartile, and the maximum value.

From Textbooks • Mar. 27, 2020

The first quartile marks one end of the box, and the third quartile marks the other end of the box.

From Textbooks • Mar. 27, 2020

There are 17 values between the first quartile, 78, and the largest value, 98: 77 percent.

From Textbooks • Mar. 27, 2020

Find the first quartile for the average percentage of fat calories.

From Textbooks • Mar. 27, 2020

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