how many locations of pressure gases are sampled is the mlr variable a continuous variable how to model multiple correlation results what variables are used to predict pressure what is the latent variable for each gas level why is there an mlr in the sample when to set each location as its own variable how many times should pca be repeated why is it important to model the location of the gases sampled what are the variables used to predict pca when do you need to determine the effect sizes on a gas sample why are pressure and gas levels highly correlated what is pca/pls where does the mlr measure gas levels how many variables are in the pca what is the latent variable in pca/pls? why should the gas pressure location be its own variable in a multivariate model what variables do multiple correlations have in the model? what is the role of the variable pca in pca which variable is the main variable for all gas sampling locations