docs: entropy

menambahkan dokumentasi entropy

app/docs/statistika/standar-deviasi/page.mdx

@@ -0,0 +1,32 @@
+# standar_deviasi
+
+Rumus:
+
+```
+σ = √∑(x - μ)^2 / n
+```
+
+Fungsi [sumber kode [disini](https://github.com/slowy07/OpenSeries/blob/main/OpenSeries/statistika.py#L27)]
+
+```python
+def standar_deviasi(
+    vektor: np.ndarray
+) -> Union[float, str]:
+```
+
+Contoh Kode
+
+```python
+import numpy as np
+from OpenSeries import statistika as statistika
+
+# contoh dari standar deviasi
+vektor = np.array([1, 2, 3, 4, 5])
+hasil = statistika.standar_deviasi(vektor)
+print(hasil)
+
+```
+
+## Coba Sekarang
+
+<iframe src="https://replit.com/@ItsArul/standar_deviasi?embed=1&theme=light" className="aspect-video w-full" />

constants/documentations.ts

@@ -60,9 +60,18 @@ export const documentations = [
                 title: "Hukum Ohm",
                 href: "/docs/fisika/hukum-ohm"
             },
+        ]
+    },
+    {
+        parent: "Statistika",
+        childs: [
+            {
+                title: "entropy",
+                href: "/docs/statistika/entropy"
+            },
             {
-                title: "Hukum entropy",
-                href: "/docs/fisika/entropy"
+                title: "standar deviasi",
+                href: "/docs/statistika/standar-deviasi"
             },
         ]
     }