quar·​tile | \ ˈkwȯr-ˌtī(-ə)l How to pronounce quartile (audio) , -tᵊl \

Definition of quartile

: any of the three values that divide the items of a frequency distribution into four classes with each containing one fourth of the total population also : any one of the four classes

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Did You Know?

A quartile is a quarter of a specific group that has been tested or evaluated in specific ways. The first quartile is the one that scores highest and the fourth quartile scores lowest. For achievement and proficiency tests, the first quartile is the place to be; for blood pressure or cholesterol, the third quartile is healthier.

Examples of quartile in a Sentence

Recent Examples on the Web However, the damage was mostly felt at the lower end of the labor market, as 80% of 9.6 million net jobs lost were occupied by workers in the bottom quartile of wage earners, according to a report by the Economic Policy Institute. Laurence Darmiento, Los Angeles Times, "Bankruptcies are way down during the pandemic. Here’s why," 23 Mar. 2021 Those allocations are then adjusted so that socioeconomically disadvantaged areas, as measured by ZIP codes that fall into the bottom quartile of the state’s Healthy Places Index, get 40 percent of the supply. San Diego Union-Tribune, "After discussions and delays, San Diego joins Blue Shield’s statewide vaccine program," 20 Mar. 2021 Meanwhile, other research has shown that workers in organisations with high levels of trust reported 106% more energy, 76% more engagement and 50% more productivity than employees at firms in the bottom quartile. David Carry, Forbes, "Building Trusted Teams That Perform From Home," 19 Mar. 2021 Those given priority in the new system live in ZIP codes based on the lowest quartile of the state’s Healthy Places Index, which measures socioeconomic opportunity. Chronicle Staff, San Francisco Chronicle, "Coronavirus updates from the Bay Area: March 4-10, 2021," 11 Mar. 2021 According to an analysis from the Economic Policy Institute, a left-leaning research group, workers in the lowest quartile of earners lost almost eight million jobs from 2019 to 2020, while the highest wage earners gained jobs. New York Times, "A Year Later, Who Is Back to Work and Who Is Not?," 9 Mar. 2021 That lowest quartile encompasses roughly 400 ZIP Codes sprinkled throughout the state, with many in the Central Valley and in and around Los Angeles County and the Bay Area. Julia Wick, Los Angeles Times, "Essential California: Shifting vaccine gears, once again," 5 Mar. 2021 Meanwhile Target’s top quartile sales moved from $434 per-square-foot in 2018 to $499 per-square-foot in 2020. Sanford Stein, Forbes, "Target Succeeds And Exceeds Expectations In 2020," 2 Mar. 2021 To advance into the red tier, counties must have 4-7 new cases per 100,000 people based on a seven-day average, 5%-8% positive test rate, and be in a 5.3%-8% quartile for health equity. Aidin Vaziri, San Francisco Chronicle, "San Mateo county set to advance into the red tier with 4 other California counties," 23 Feb. 2021

These example sentences are selected automatically from various online news sources to reflect current usage of the word 'quartile.' Views expressed in the examples do not represent the opinion of Merriam-Webster or its editors. Send us feedback.

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First Known Use of quartile

1879, in the meaning defined above

History and Etymology for quartile

International Scientific Vocabulary, from Latin quartus

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Time Traveler for quartile

Time Traveler

The first known use of quartile was in 1879

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Statistics for quartile

Last Updated

3 Apr 2021

Cite this Entry

“Quartile.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/quartile. Accessed 17 Apr. 2021.

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More from Merriam-Webster on quartile

Britannica.com: Encyclopedia article about quartile

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