exploratory data analysis and models on the epi dataset
+date: 2025-10-13
+dataset and choices
+-
+
- file:
epi_results_2024_pop_gdp_v2.csv
+ - region column:
region
+ - response var:
EPI.new
+ - regions:
Sub-Saharan AfricavsLatin America & Caribbean
+
1) variable distributions
+1.1 boxplots and histograms (with density!)
+
+
+
+
1.2 qq plot (two-sample)
+
2) linear models
+full: EPI.new ~ gdp
+full: EPI.new ~ gdp + population
+2.2 same models on one region (comparison)
+on region Sub-Saharan Africa, the better model is region Sub-Saharan Africa: EPI.new ~ gdp + population (r²=0.361, aic=265.4, bic=272.7).
3) classification (knn, label = region)
+model A
+-
+
- k: 5 | accuracy: 0.5581 | test n: 43
+variables:
c("AGR.new", "AIR.new", "APO.new")+
+
model B
+-
+
- k: 5 | accuracy: 0.5116 | test n: 43
+variables:
c("BCA.new", "BDH.new", "CBP.new")+
+