Home buyers in Massachusetts puts deals under agreement at a faster clip in March compared with last year. The Massachusetts Association of Realtors announced Tuesday morning that pending home sales for the month were up more than 14 percent compared with last March, the State House News Service reported. The median price of a home placed under agreement last month was $320,000. Pending condo sales last month were up 12.1 percent, and the median condo sale price rose 3 percent, to more than $309,000. The association’s market confidence index has been down 15 of the past 16 months, but still registered 69.18 on a 100-point scale, with 0 representing the weakest market and 100 the strongest.