yán jiū rén yuán / gēn jù / yàng běn / de / yuán diǎn jǔ / pàn duàn / shù jù / shì fǒu / fú hé / yù qī / mó xíng研究人员根据样本的原点矩,判断数据是否符合预期模型。The researchers used the sample's raw moments to determine whether the data fit the expected model.