what is the pca in computing how should data be processed and why what is pca? when reducing the data to a fixed size what is the pca what do I do with the data and how do i reduce the data dimensionality? how to reduce the size of a dataset in r pca is used to reduce the dimensionality of a set of observations what is the purpose of the pca? how can we reduce dimensionality using pca why do we use pca in math what can we do with the pca what is pca used for r what is the use of pca what is pca a used for in r how to calculate the pca of the data what is the purpose of pca how to reduce the size of the dataset how to decrease the dimension on a k-mean dataset how to reduce dimensionality of a dataset