The major types of bias in the observation bias group include recall bias, interviewer bias, follow-up bias and misclassification bias. Confounding is sometimes referred to as the third major class of bias. It is a function of the complex interrelationships between various exposures and disease.
Today's mortgage rates - April 20, 2017. Mortgage rates barely moved this week, but did decline just enough for 30-year rates to reach new lows for 2017. According to Freddie Mac, the average conforming 30-year fixed-rate mortgage shed two basis points (0.02 percent) to slide to 4.08 percent. Fifteen-year fixed rate mortgages eased a similar amount, with that .02 decline good enough to tie a low for the year.
WASHINGTON (AP) â Average U.S. rates on fixed mortgages declined this week, hovering near historically low levels. Mortgage buyer Freddie Mac said Thursday that the average rate for a 30-year loan eased to 4.14% from 4.17% last week. The average for the 15-year mortgage fell to 3.22% from 3.30%.verage 30-year mortgage rate falls to 4.14%. Mortgage buyer Freddie Mac said Thursday that the average rate for a 30-year loan eased to 4.14% from 4.17% last week. The average for the 15-year mortgage fell to 3.22% from 3.30%.