modify flow of MSE sentence to follow simpler structure as sugested

Author: liamjberrisford

individual_modules/introduction_to_machine_learning/1_linear_regression.ipynb

@@ -706,7 +706,7 @@
    "source": [
     "### What does \"best\" mean?\n",
     "\n",
-    "When we trained our linear model, we needed to define a cost function. We will talk a bit more about these later, but for a linear model, we commonly use the Root Mean Squared Error ($RMSE$), or just the Mean Squared Error, or $MSE$:\n",
+    "When we trained our linear model, we needed to define a cost function. We will talk a bit more about these later, but for a linear model, we commonly use the Root Mean Squared Error ($RMSE$), or just the Mean Squared Error ($MSE$):\n",
     "\n",
     "$$\n",
     "MSE = \\frac{1}{n} \\sum_{i=1}^{n} (y_i - \\hat{y}_i)^2\n",
@@ -1351,7 +1351,7 @@
  ],
  "metadata": {
   "kernelspec": {
-   "display_name": "cfrr",
+   "display_name": "Python 3 (ipykernel)",
    "language": "python",
    "name": "python3"
   },
@@ -1365,9 +1365,9 @@
    "name": "python",
    "nbconvert_exporter": "python",
    "pygments_lexer": "ipython3",
-   "version": "3.13.0"
+   "version": "3.9.19"
   }
  },
  "nbformat": 4,
- "nbformat_minor": 2
+ "nbformat_minor": 4
 }