Merge pull request #10 from clemsadand/patch-2

Update 15_hierarchical_modelling.ipynb

15_hierarchical_modelling.ipynb

@@ -14,7 +14,7 @@
         "\n",
         "`````{admonition} Group Task\n",
         ":class: tip\n",
-        "Discuss with your enighbours how exactly the assumption of indendepdent errors $\\epsilon_i$ in linear regression $y_i = X_i \\beta + \\epsilon_i, \\quad \\epsilon_i \\sim \\mathcal{N}(0, \\sigma^2)$ helps in the classical setting. What does it enable us to compute analytically?\n",
+        "Discuss with your neighbours how exactly the assumption of indendepdent errors $\\epsilon_i$ in linear regression $y_i = X_i \\beta + \\epsilon_i, \\quad \\epsilon_i \\sim \\mathcal{N}(0, \\sigma^2)$ helps in the classical setting. What does it enable us to compute analytically?\n",
         "`````\n",
         "\n",
         "One of the simplifying assumptions is <font color='orange'>homoskedasticity</font>, i.e. the assumption of <font color='orange'>equal or similar variances in different groups.</font>\n",