The score for the 50:50:0:0 student is:
1−0.52−0.52−02−02=0.5
The score for the 40:20:20:20 student is:
1−0.62−0.22−0.22−0.22=0.52
I think the way you’ve done it is Briers rule which is (1 - the score from the OP). In Briers rule the lower value is better.
The score for the 50:50:0:0 student is:
1−0.52−0.52−02−02=0.5
The score for the 40:20:20:20 student is:
1−0.62−0.22−0.22−0.22=0.52
I think the way you’ve done it is Briers rule which is (1 - the score from the OP). In Briers rule the lower value is better.