... 82 84 79 96 88 98];testscores.William_King.week(1:25) = [ 878 0918499 879 3 879 7 878 289 86 82 90 98 75 79 92 84 90 93 84 78 81];Now runavgscore, supplying the students name fields for the testscoresstructure ... concen(toxtest);% Create two vectors:% r1 contains the ratio of mercury to lead at each observation.% r2 contains the ratio of lead to chromium.r1 = [toxtest.mercury] ./ [toxtest.lead];r2 = [toxtest.lead] ... 'Ann_Lane', 7, 22)ans =85.2500avgscore(testscores, 'William_King', 7, 22)ans = 87. 7500Finding the Size of Structure ArraysUse the sizefunction to obtain the size of a structure...