response time code snippets in matlab

responsetimes = [ 2.4 2.2 2.9 2.7 2.7; 1.6 1.7 1.9 1.5 1.0; 2.1 2.2 0.9 2.5 1.9; 1.7 2.4 1.6 2.1 1.4 ] calculate the mean response times for each trial in matlab