Which of the following is NOT true about PCA?

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Which of the following is NOT true about PCA?

  •  PCA stands for principal component analysis
  •  PC1 and PC2, the first and second principal components, respectively, are always orthogonal to each other.
  •  PC1, the first principal component , captures the largest amount of variance in the data along a single dimension.
  •  PCA is a dimensionality reduction technique that removes a feature that is very correlated with another feature.

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