https://jongha-jeon-dev.github.io/standarderror/tags/regression-diagnostics/Recent content in Regression-Diagnostics on The Standard ErrorHugo -- 0.123.7en-gbTue, 01 Sep 2026 00:00:00 +0000https://jongha-jeon-dev.github.io/standarderror/lectures/linear-algebra-6-one-row/Tue, 01 Sep 2026 00:00:00 +0000https://jongha-jeon-dev.github.io/standarderror/lectures/linear-algebra-6-one-row/A single observation with a residual of exactly zero, a Cook's distance of 0/0, and a coefficient that stops existing when you delete it — and, separately, one row moving a slope by six standard errors.