Assignment 1 — BMI One-Sample t-Test
Sample mean vs. hypothesized national average (95% CI: 29.61–31.33)
Full results
Assignment 2, Part A — Multiple Linear Regression (Sales ~ TV + Radio + Newspaper)
Regression coefficients (green = significant at α=0.05)
Coefficients
| Predictor | Coef. | SE | t | p | 95% CI |
|---|
Model fit & diagnostics
Assignment 2, Part B — One-Way ANOVA & LDA Classification (Iris)
Mean petal length by species
LDA per-species F1-score (test accuracy 97.8%)
ANOVA & robustness checks
| Test | Statistic | p-value | Conclusion |
|---|
Tukey HSD post-hoc (pairwise comparisons)
| Group 1 | Group 2 | Mean diff. | p (adj.) | Reject H0? |
|---|