別小看小學數學,可能你也答錯
Principal component analysis - Wikipedia, the free encyclopedia (圖文翻攝自ntdtv ,同下 ) 這是香港一間小學的入學考試數學題,題目如下圖。 乍看好像很簡單,只要分別將數字代入公式,便可計算出答案。 第一步:蘋果=7第二步Principal component analysis (PCA) is a statistical procedure that uses an orthogonal transformation to convert a set of observations of possibly correlated variables into a set of values of linearly uncorrelated variables called principal components. The...
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