From 5 to 7, it costs 1 TPE to improve an attribute by one.
From 7 to 9, it costs 2 TPE to improve by one.
From 9 to 11, it costs 5 TPE to improve by one.
From 11 to 13, it costs 8 TPE to improve by one.
From 13 to 15, it costs 15 TPE to improve by one.
From 15 to 17, it costs 25 TPE to improve by one.
From 17 to 20, it costs 40 TPE to improve by one.

+2 Uncapped TPE - AC344
+3 Uncapped TPE - Weekly Training 11/29-12/5
+6 (5.5) Uncapped TPE - S57 Mock Draft
Total Points Earned: 282 + 11 = 293

Available TPE: 15 + 11 = 26

Adjusted Attributes:
Stamina: 11 > 12 (8 TPE)
Strength: 11 > 12 (8 TPE)
Puckhandling: 11 > 12 (8 TPE)

Total TPE Spent: 24
Remaining TPE: 2