Students recorded the increase in gasoline price once a month for five months and recorded these observations. (Decreases in price were recorded as a negative increase.)

Week 1: +$0.02
Week 2: +$0.06
Week 3: -$0.04
Week 4: -$0.13

In which week was the price increase the greatest?

Week 1
Week 2
Week 3
Week 4