Populations, random samples. Sample statistics, moments of the sample mean and variance.

母体， 随机样本。 样本统计， 样本平均数和变异数的动差。

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The methodologies employed in the thesis are: investigation, observation, comparison, sample statistics and prediction, etc.

本文使用的研究方法主要有：调查法、观察法、比较法、抽样统计法、预测法等。

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By the sample statistics of funds expenditure, the results are: Liberal Arts 1, Engineering and Agriculture 1.4, Science 1.6, Medicine and Arts 1.8.

通过对样本经费支出的多种统计，得出文科的学科费用系数为1，工科和农科为1.4，理科为1.6，医科和艺术类学科为1.8。

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He added that the board's internal audit - which looked at a sample of statistics - found no evidence of "deliberate instructions" being given to members of staff regarding the "inappropriate use of waiting times codes".

BBC: NHS staff 'felt pressure' to meet waiting times targets

From the people who join the page I'll be selecting a 'stratified sample' (that's my statistics GCSE maths coming in there) to analyse for my experiment.

BBC: Facebook profile photo experiment goes live

The new report is due to be carried out over the coming months by Ofsted inspectors visiting a sample of more than 50 secondary schools, looking at statistics on gifted and talented provision and pupil progression, according to Sir Michael.

BBC: Ofsted chief voices fears for brightest pupils