For more accuracy, consider increasing the number of samples required or the number of data points to average.

为了更加精确，请考虑增加必要的样例数或者数据点数以进行平均。

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Saliva samples from the 95 control volunteers showed that their cortisol levels rose by an average of 48%, as expected in stressful situations.

来自95名志愿者的唾液样本标明他们的肾上腺皮质素平均上升48%，与所预计情形吻合。

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They then extracted DNA from cells in those samples and measured the average length of the 356 male volunteers' and 551 female volunteers' telomeres.

她们从血样细胞中抽取了DNA，并测量了356位男人和551位女人的端粒的平均长度。

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The Dutch authorities' independent study of 26 samples of rice imported from Asian nations found average levels of seven parts per billion - a thousandth of those found in the original study - and with no samples above the EU limit of 200 parts per billion.

BBC: Study of lead levels in rice under scrutiny

In 2010, the European Food Safety Authority published a report outlining analysis of 612 rice samples from the EU, finding average levels of just a few tens of parts per billion.

BBC: Study of lead levels in rice under scrutiny

Only chemical chromatography that measures several samples for their average level of capsaicin, the chemical that gives peppers their bite, can establish a record claim.

WSJ: Arms Race to Grow World's Hottest Pepper Goes Nuclear