diff --git a/notebook/problems.ipynb b/notebook/problems.ipynb
index ff2c594..a253f32 100644
--- a/notebook/problems.ipynb
+++ b/notebook/problems.ipynb
@@ -8,20 +8,14 @@
                 "# Descriptive statistics problems"
             ]
         },
-        {
-            "cell_type": "markdown",
-            "id": "aa8993e4",
-            "metadata": {},
-            "source": [
-                "### Exercise 1"
-            ]
-        },
         {
             "cell_type": "markdown",
             "id": "5e0ab0d5",
             "metadata": {},
             "source": [
-                "We will use Numpy to obtain information to describe statistically.\n",
+                "### Exercise 1\n",
+                "\n",
+                "We will use NumPy to obtain information to describe statistically.\n",
                 "\n",
                 "- Generate an array of 100 elements following a normal distribution.\n",
                 "- Generate an array of 100 elements following a chi-square distribution with 3 degrees of freedom.\n",
diff --git a/notebook/solutions.ipynb b/notebook/solutions.ipynb
index ed71f32..3c9d6d5 100644
--- a/notebook/solutions.ipynb
+++ b/notebook/solutions.ipynb
@@ -148,7 +148,7 @@
             "source": [
                 "##### Mode\n",
                 "\n",
-                "In a continuous array, values are usually represented as intervals rather than distinct numbers. Thus, finding the mode is slightly different from how it's done in a discrete array. For continuous data, we typically find the \"modal class\" or the interval with the highgers frequency."
+                "In a continuous array, values are usually represented as intervals rather than distinct numbers. Thus, finding the mode is slightly different from how it's done in a discrete array. For continuous data, we typically find the \"modal class\" or the interval with the highest frequency."
             ]
         },
         {