add prelim lecture 1 material

jphall663 · May 17, 2020 · dd9195a · dd9195a
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diff --git a/.gitignore b/.gitignore
@@ -1 +1,4 @@
 env_rml
+.idea
+.ipynb_checkpoints
+__pycache__
diff --git a/default_of_credit_card_clients.xls b/default_of_credit_card_clients.xls
diff --git a/img/lecture_1.png b/img/lecture_1.png