The average rate on a 30-year mortgage slipped to 6.74% from 6.75% last week, while the 15-year rate dropped to 5.87% from 5.92% last week, Freddie Mac said.

The average rate on a 30-year mortgage slipped to 6.74% from 6.75% last week, while the 15-year rate dropped to 5.87% from 5.92% last week, Freddie Mac said.