Math:  Statistics and Probability Statistics and Probability Question #4928 from PQ

Hi, I need to perform a paired sample t-test and I have the following data set: 2002 2003 2004 2005 2006 100 84 76 111 65 75 30 45 89 90 0 1 29 4 44 9 18 6 98 9 11 29 45 65 3 111 88 90 9 90 44 21 10 6 26 I wish to compare the period 2002, 2003 and 2004 to the period 2005 and 2006. To do this would I use the averages for each period, or simply use the sums for each period. Which set of data below would I use? A 2002.03.04 2005/06 86.66667 88 50 89.5 10 24 11 53.5 28.33333 34 96.33333 49.5 25 16 B 2002.03.04 2005/06 260 176 150 179 30 48 33 107 85 68 289 99 75 32