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Designed as a short vertical revision video with narration, captions, and focused visual diagrams.</video:description><video:content_loc>https://videos.eclatinstitute.sg/published/h2-maths-6-2-custom-pmf-expectation-variance/h2-maths-6-2-custom-pmf-expectation-variance-remotion.mp4?v=2026-04-30</video:content_loc><video:duration>106</video:duration></video:video></url><url><loc>https://eclatinstitute.sg/videos/h2-maths-notes/h2-maths-6-2-linear-transformation-mean-variance</loc><lastmod>2026-04-30T00:00:00.000Z</lastmod><changefreq>monthly</changefreq><priority>0.6</priority><video:video><video:thumbnail_loc>https://videos.eclatinstitute.sg/thumbnails/h2-maths-6-2-linear-transformation-mean-variance.jpg?v=2026-04-30</video:thumbnail_loc><video:title>H2 Maths 6.2 - Linear Transformation: E(aX + b) and Var(aX + b)</video:title><video:description>H2 Maths concept explainer covering H2 Maths 6.2 - Linear Transformation: E(aX + b) and Var(aX + b). 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