Updated the plot code.

.idea/Project.iml

@@ -4,7 +4,7 @@
     <content url="file://$MODULE_DIR$">
       <excludeFolder url="file://$MODULE_DIR$/.venv" />
     </content>
-    <orderEntry type="jdk" jdkName="Python 3.11" jdkType="Python SDK" />
+    <orderEntry type="jdk" jdkName="Python 3.13" jdkType="Python SDK" />
     <orderEntry type="sourceFolder" forTests="false" />
   </component>
 </module>

.idea/inspectionProfiles/profiles_settings.xml

@@ -1,5 +1,6 @@
 <component name="InspectionProjectProfileManager">
   <settings>
+    <option name="PROJECT_PROFILE" value="Default" />
     <option name="USE_PROJECT_PROFILE" value="false" />
     <version value="1.0" />
   </settings>

.idea/misc.xml

@@ -3,5 +3,5 @@
   <component name="Black">
     <option name="sdkName" value="Python 3.11 (Project)" />
   </component>
-  <component name="ProjectRootManager" version="2" project-jdk-name="Python 3.11" project-jdk-type="Python SDK" />
+  <component name="ProjectRootManager" version="2" project-jdk-name="Python 3.13" project-jdk-type="Python SDK" />
 </project>

Grade_Calculator.py

@@ -70,4 +70,4 @@ plt.ylabel("Cut-off Grade (%)")
 plt.grid(True)
 
 plt.tight_layout()
-plt.show()
+plt.savefig('plot.png')