...随机样本(random sample)、选自人群的样本(population-based sample)、转诊样本(referred sample)、连续样本(consecutive sample)、意愿者样本(volunteer sam-ple)及随便抽取的样本(convenience sample),将钻研东西的来源先容明确,其主要手法除了预计抽样误差...
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The study sample consisted of 239 consecutive suicide attempters treated in the emergency departments of four randomly selected general hospitals in Shenyang, a city in northeast China.
研究样本共239名,随机抽取自沈阳的四家综合医院的急诊室接诊的自杀未遂者。
The first style, linespoints, is generally useful when plotting data. It marks a point at each sample or data point considered, and connects consecutive points using linear interpolation.
第一种样式linespoints通常在对数据绘图时非常有用,它在涉及的每个示例或数据点处标记一个点,并使用线性插值法连接连续的点。
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