Mortgage rates ticked up this week following six weeks of declines, according to a Thursday report by mortgage buyer Freddie Mac, which linked the gains to strong labor market and earnings data. The average rate for the 30-year mortgage jumped by 10 basis points to 2.87 percent from 2.77 percent last week, the report showed. The benchmark rate, which reached a peak this year of 3.18 percent in April, stood at 2.96 percent a year ago. The rate for a 15-year rose to 2.15 percent this week from 2.10 last week, according to the report. “Following last Friday’s strong jobs report, which revealed broad based gains in employment and wage growth, mortgage rates are moving higher after dropping for six consecutive weeks. But rates remain low,” said Freddie Mac chief economist Sam Khater, according to a post on social media. Average mortgage rates remain historically low, at under 3 percent, …