how to tell if there is a correlation between a variable and a variable what is the correlation matrix for a group of data? why does the relationship between a single variable and a variable from group b differ? correlation coefficients how can you determine correlations what is the correlation between two groups what is the correlation of variable a1 and variable b? why do we see a correlation between two variables in a multidimensional set? how are correlations measured? how to find the correlation between variables in a data set is a variable in a group a positive or negative which correlations can be used to test correlations how do correlations work with two variables what is the correlation between two groups of variables what's the correlation in a two block matrix what is the correlation matrix for a group b of data which of these variables would have the lowest correlation? what is the correlation matrix? explain in the following two blocks. how many group b variables does the spearman rho coefficient test for how to find the correlation coefficient of variable in a multidimensional dataset