EUR is the strongest. NZD is the weakest
Calculating the % change for the week of the major currency pairs, and accumulating those changes, shows that the EUR is the strongest currency this week. The weakest was the NZD.
The EUR benefited from a strong 2.2% gain vs. the USD. That pair bottomed on Monday and rallied higher on each subsequent day of the week. The price traded at the highest level since February 6th.
The charts below show the % changes for the major pairs vs each other for the trading week.