Chemical Features of Wine. The table below shows the PCA output on data $($non$-$normalized$)$ in which the variables represent chemical characteristics of wine, and each case is a different wine. The data are in the file Wine.xls$,$ which you can refer to when answering the question.

a$)$ Consider the row near the bottom labeled "Variance." Explain why column $1\text{'}$s variance is so much greater than that of any other column.

b$)$ Discuss the use of normalization $($standardization$)$ in relating to the output in part a$)$ and the dataset.