In studies with small sample sizes, imbalances between the two groups can easily occur despite randomisation .

在小样本研究中，尽管采用了随机法，但两组间偏倚还是很容易发生的。

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A cellphone's effect on the brain is very weak, so you lose statistical power with small sample sizes and durations, "said Volkow."

手机对大脑的影响很微弱，因此，仅在短期内对少数人进行研究，在统计学上不具备说服力。

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Microcalorimetry techniques are often required when performing calorimetric experiments with small sample sizes or slow heating rates.

在进行小尺寸样品或者慢加热速率的量热学实验时，常常需要使用微热量测量技术。

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The results were contradictory, as often happens with such small sample sizes.

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While this is an early study with a small sample size, it is the first time this type of anger or emotional stress testing has been shown to correlate with future arrhythmias, he said.

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With such a small sample those falls could seriously distort the average spending per beneficiary enough to rank my little hospital in a lower tier.

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