calculate rating average

_data/data.json

@@ -0,0 +1,6 @@
+{
+  "semesters": [
+    { "ID": "WiSe 2024/25", "participants": 6, "evaluation_average": 5.0 },
+    { "ID": "SuSe 2024", "participants": 9, "evaluation_average": 5.0 }
+  ]
+}

index.md

@@ -10,6 +10,16 @@ permalink: /
 
 <br>
 
+{% assign total_average = 0 %}
+{% assign count = 0 %}
+
+{% for semester in site.data.semesters.semesters %}
+  {% assign total_average = total_average | plus: semester.evaluation_average %}
+  {% assign count = count | plus: 1 %}
+{% endfor %}
+
+{% assign average_of_averages = total_average | divided_by: count %}
+
 ![Course Status](https://img.shields.io/badge/Current%20course-Winter%20semester%202024/25-yellow)
 ![Course Status](https://img.shields.io/badge/Upcoming%20course-Summer%20semester%202025-green)<br>
 [![Level](https://img.shields.io/badge/Level-Master%20|%20PhD-blue)](https://digital-work-lab.github.io/literature-review-seminar/docs/syllabus.html)
@@ -18,7 +28,7 @@ permalink: /
 [![Topic](https://img.shields.io/badge/Topics-Open%20topic%20&%20Literature%20review%20methods-blue)](https://digital-work-lab.github.io/literature-review-seminar/docs/syllabus.html)
 [![Format](https://img.shields.io/badge/Format-In%20person%20sessions%20&%20individual%20work-blue)](https://digital-work-lab.github.io/digital-work-lecture/docs/syllabus.html)<br>
 <!-- ![Offered by: Digital Work at Otto-Friedrich-Universität Bamberg](https://img.shields.io/badge/Offered%20by-%20Digital%20Work%20(Otto--Friedrich--Universit%C3%A4t%20Bamberg)-blue) -->
-[![Evaluations](https://img.shields.io/badge/Rating-★★★★★%20(5%20/%205)-yellow)](https://digital-work-lab.github.io/literature-review-seminar/docs/evaluations.html)
+[![Evaluations](https://img.shields.io/badge/Rating-★★★★★%20({{ average_of_averages }}%20/%205)-yellow)](https://digital-work-lab.github.io/literature-review-seminar/docs/evaluations.html)
 ![Completion](https://img.shields.io/badge/Enrollment-9%20students-green)
 ![License: CC BY 4.0](https://img.shields.io/badge/License-CC%20BY%204.0-green.svg)
 [![GitHub stars](https://img.shields.io/github/stars/digital-work-lab/literature-review-seminar.svg?style=social&label=Star)](https://github.com/digital-work-lab/literature-review-seminar/stargazers)