Let's look at the relationship between mRNA Expression (Affy) vs. mRNA Expression (RNAseq) only. Define a function called regression_parameters that returns the parameters of the regression line as a two-item array containing the slope and intercept of the regression line as the first and second elements respectively. The function regression_line takes in two arguments, an array of x values, and an array of y values.sd_y n [18]: def regression_parameters (x, y): sd_x np.std(x) mean_x = np.mean(x) np.std(y) mean_y np.mean(y) slope sd_y / sd_x intercept mean_y slope mean_x return make_array(slope, intercept) * regression_parameters (pten.column ("MRNA Expression (Affy)"), pten.column ("MRNA Expression (RNAseq)")) parameters parameters ut[18]: array([ 1.19005404, -7.47382226])