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quartile |
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quartile
[kwôr′təl, kwôr′tīl] Etymology: L, quartus, fourth one-fourth of the distribution of scores. The first quartile would be the lowest 25% of scores, the second quartile would represent the 26% to 50% range of scores, and so on. quartile [kwor´tīl] any of the three values that divide the range of a probability distribution into four parts of equal probability; the first, second, and third quartiles are the 25th, 50th, and 75th percentiles.
quartile one of the values establishing the division of a series of variables into fourths, or the range of items included in such a segment. Want to thank TFD for its existence? Tell a friend about us, add a link to this page, add the site to iGoogle, or visit the webmaster's page for free fun content. |
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5] exposure had a 42% increased relative risk of preeclampsia compared with women in the lowest quartile, and those in the highest quartiles of [NO. The model found that those in the top three quartiles of idea density were seven times more likely to have asymptomatic Alzheimer's at the time of their death than those in the lowest quartile. When subjects in the second through fourth quartiles of serum insulin concentration were compared with those in the first or lowest quartile, higher insulin levels within the normal range were associated with statistically significantly increased risk of prostate cancer. |
Quartiles |
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