01-setup.md really needs to be index.md!

Author: stela2502

docs/02-basics.md

@@ -229,48 +229,33 @@ np.std(v)
 2. Compute its mean and standard deviation.
 3. Try the same with a Python list. What happens?
 
----
-
-## Mathematical background
-
-For a vector with values:
-
-\[
-x_1, x_2, x_3, \dots, x_n
-\]
-
-### Mean
-
-The **mean** (average) is:
 
-\[
-\mu = \frac{1}{n} \sum_{i=1}^{n} x_i
-\]
+Steps:
+ 1. Subtract the mean from each value
+ 2. Square the differences
+ 3. Compute the mean of those squared differences
+ 4. Take the square root
 
-This means:
-- Add up all values
-- Divide by the number of values
 
----
+??? exercise "Solution"
+    ```python
+    import numpy as np
 
-### Standard deviation
+    # 1. Create vector
+    v = np.arange(0, 101, 10)
+    v
 
-The **standard deviation** measures how much the values vary around the mean.
+    # 2. Mean and standard deviation
+    np.mean(v)
+    np.std(v)
 
-Population standard deviation:
+    # 3. Try the same with a Python list
+    lst = list(range(0, 101, 10))
 
-\[
-\sigma = \sqrt{
-\frac{1}{n}
-\sum_{i=1}^{n} (x_i - \mu)^2
-}
-\]
-
-Steps:
-1. Subtract the mean from each value
-2. Square the differences
-3. Compute the mean of those squared differences
-4. Take the square root
+    # This will fail:
+    np.mean(lst)
+    np.std(lst)
+    ```
 
 ---
 

docs/01-intro.md docs/index.mddocs/01-intro.md renamed to docs/index.md

@@ -2,7 +2,7 @@ site_name: Python programming I
 theme:
   name: material
 nav:
-  - Setup: 01-intro.md
+  - Setup: index.md
   - Basics: 02-basics.md
   - Plotting: 03-plotting.md
   - DataFrames: 04-dataframes.md