Just finished the Advanced Data Analysis certificate and I’m chuffed with what I’ve learned. The modules on clustering and PCA helped me finally make sense of our messy customer data. I was able to build a segmentation model that the marketing team is now using to target campaigns. The video lessons were engaging and the downloadable resources were spot‑on – especially the cheat‑sheet on SQL window functions. It was a solid, practical course that got me where I needed to be.
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