---
title: "Discussion on \"What PCA is actually doing to your data\" | Hashnode"
description: "Discussion on \"What PCA is actually doing to your data\". It only sees variance, it never sees your target"
url: "https://hashnode.com/posts/what-pca-is-actually-doing-to-your-data/6a964b1846119e8824fa4b4a"
---

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# [What PCA is actually doing to your data](https://monthlydatascience.hashnode.dev/what-pca-is-actually-doing-to-your-data?utm_source=hashnode&utm_medium=feed)

It only sees variance, it never sees your target

Sep 1 · 7 min read · monthlydatascience.hashnode.dev  
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-   [#statistics](https://hashnode.com/tag/statistics)
-   [#machine-learning](https://hashnode.com/tag/machine-learning)
-   [#pca](https://hashnode.com/tag/pca)
-   [#variance](https://hashnode.com/tag/variance)
-   [#data-science](https://hashnode.com/tag/data-science)
-   [#dimensionality-reduction](https://hashnode.com/tag/dimensionality-reduction)

## Written by

[Mohitm](https://hashnode.com/@mohitm)

@mohitm · Bangalore, India

  
[View profile](https://hashnode.com/@mohitm)

Data science professional with around 15 years experience, working to on Pricing and Media analytics practice for CPG companies. Currently building a micro-learning app for Stats/ ML learning. Exploring the AI goodness (and the slop) like the rest.

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