# MATLAB: Hi, i want to run this for loop data, data1, data2 arrays and have the variables R2 and R2_adj to be saved for every iteration. Ive had a lot of trouble with this and any help would be appreciated.

## MATLAB: Hi, i want to run this for loop data, data1, data2 arrays and have the variables R2 and R2_adj to be saved for every iteration. Ive had a lot of trouble with this and any help would be appreciated.

for loopregressionrsquared

``mpg = importdata('carmpgdat.txt', 't', 1);VOL = mpg.data(:, 1);HP = mpg.data(:, 2);MPG = mpg.data(:, 3);SP = mpg.data(:, 4);WT = mpg.data(:, 5);GPM = 1./MPG;  const = ones(82,1);  data = [const VOL HP SP WT];  data1 = [const HP WT];  data2 = [const SP WT];for data = [data data1 data2][b, bint, r, rint, stats] = regress(MPG, data);y_hat = data * b;e = MPG - y_hat;e2 = e.*e;sse = sum(e2);v = MPG - mean(MPG);v2 = v.*v;sst = sum(v2);R2 = 1-(sse/sst);n = size(data,1)p = size(data,2)-1R2_adj = 1-((sse/(n-p)) / (sst/(n-1)));end``

``counter = 1for k = [data data1 data2]    % k will take on values of every element in the vector [data data1 data2]    % k will not take on values 1,2,3,4,5, etc. unless those are in the vector like that.    R2(counter) = .....        R2_adj(counter) = .....    counter = counter + 1;end``