Quartiles divide the data into four equal parts . 四分位點把資料分成四等分。
The upper quartile is that value above which 25 per cent of the observations lie . 上四分位數是25的觀察值位于其上的值。
Inter - quartile range 四分位數間距
Only 47 % of children born to women in the top quartile of stress were males 在受壓力程度最大的婦女所生的孩子中,只有47 %為男性。
The cumulative exposure distribution was divided into quartiles and adjusted odds ratios were calculated using the lowest quartile as the referent group 累積暴露分布被區分為4等分,并且利用最低暴露的1 / 4族群作為參考來計算調整后的對比值。
Much better to stick with a two - level system of pass and fail , or ( if you will insist on such elitism ) one extra level of “ pass with distinction ” for the top quartile 最好還是繼續兩級方案,即通過和不通過,或者(若堅持精英主義)再為頂尖者增加“優秀通過”這個額外的級別。
According to statistics canada , 18 to 24 - year olds from the highest income quartile are more than twice as likely to attend university as students from lower - income families 根據加拿大統計數字顯示, 18 - 24歲的孩子中,高收入家庭孩子接受高等教育的人數是低收入家庭孩子的兩倍多。
Average usual calcium intakes in each intake quartile were 280 , 420 , 580 and 880mgd . we observed that women of the higher calcium intake quartile had higher mean bone mass values 按鈣進食量將她們分為四個組別,在這四個組別中,她們的鈣進食量的平均值分別為每天280 、 420 、 580和880mg 。
Using this approximation , the risk of the high quartiles ( over 95 % ) is underestimated , especially for the fat - tailed series , which is common in financial data 在這個假設條件下,置信度較高時( 95以上) var估計往往會低估風險,尤其是當樣本數據具有厚尾特征時,而金融數據大都具有尖峰厚尾的特點。
Percentage change in income less income tax for the upper quartile household minus the percentage change in income less income tax for the lower quartile . gross domestic fixed capital formation as a percentage of gdp 上四分位數住戶的入息(已扣除入息稅)變動百分比與下四分位數住戶的入息(已扣除入息稅)變動百分比的差額。
(statistics) any of three points that divide an ordered distribution into four parts each containing one quarter of the scores
百科解釋
In descriptive statistics, the quartiles of a set of values are the three points that divide the data set into four equal groups, each representing a fourth of the population being sampled. A quartile is a type of quantile.