This week, mortgage rates showed mixed results, according to a study released by Freddie Mac, which is compiled using data gathered from around 125 lenders across the country.

Mortgage rate data released this same week from Bankrate shows more steady rates, using data from the top 10 banks and thrifts in the top 10 U.S. markets.

Freddie Mac showed the 30-year fixed-rate mortgage averaging at 4.81 percent (0.8 point) this week, up from last week’s results, which were 4.80 percent.

The 15-year fixed-rate mortgage came in at 4.08 percent (0.8 point), which was down from last week’s 4.09 percent.

Adjustable-rate mortgages were also mixed this week, with 5-year adjustable-rate mortgages averaging 3.69 percent (0.7 point) and 1-year adjustable-rate mortgages staying the same at 3.26 percent (0.6 point).

“Mortgage rates held relatively stable this week on news that the economy improved and inflation remained in check at the end of 2010,” said Frank Nothaft, vice president and chief economist for Freddie Mac. “In the fourth quarter of 2010, housing was the most affordable on record according to figures published by the National Association of Realtors.”

Data released by Bankrate was somewhat different, with the company reporting increases in the 30-year fixed mortgage rate, which inched higher to 5.02 percent (0.4 point), and in the 15-year fixed mortgage, which climbed higher to 4.29 percent (0.39 point).

Both the 5-year and the 1-year adjustable rates stayed level at 3.84 percent (0.37 point).

According to Bankrate, the majority (59 percent) of mortgage experts surveyed for this index expect an increase in mortgage rates over the next week, while 35 percent do not predict much movement at all in mortgage rates, saying they’ll be more or less unchanged.

The remaining 6 percent foresee mortgage rates falling even lower over the next week.