Three different methods for memorizing information are compared in an experiment. Eighteen participants are randomized into three groups of six individuals. Each group uses a different method of memorization to memorize a list of 50 words, and then all participants are tested to determine how many words on the list they can recall. The data for the number of words recalled for individuals in each group are as follows: Method 1: 24, 26, 29, 33, 32, 35 Method 2: 27, 28, 30, 34, 35, 39 Method 3: 17, 17, 23, 25, 28, 36 (a) Rank the combined dataset. (Round your answers to four decimal places.) Find the value of R,, the mean rank for the first group. R 1 = Find the value of R2, the mean rank for the second group. R 2 = Find the value of R3, the mean rank for the third group. R2 = (b) Find the value of H, the Kruskal-Wallis test statistic. (Round your answer to two decimal places.) H = Need Help? Read It