Oil Slips on Stronger Dollar; Gains on the Week on Supply Outages

NEW YORK, May 13 (Reuters) - Oil slipped on Friday on a stronger dollar and as investors cashed in on a three-day rally, but prices still ended the week higher after production in Nigeria fell to its lowest in two decades and wildfires slashed output from Canada's oil sands.

The dollar hit a more than two-week high against a basket of currencies, after strong U.S. retail and consumer sentiment data, weighing on greenback-denominated commodities as imports become more expensive for countries using other currencies, and potentially hitting demand.

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