Fig. 1
From: Digital droplet PCR is an accurate and precise method to measure DNA copy number

Determination of ddPCR (A) and qPCR (B) accuracy in CNV enumeration, though comparison to PFGE. The line of best fit from simple linear regression, constrained through (0,0) is presented with 95% confidence bands and the resulting equation is displayed on the graph in the form of y = mx, where m is slope. An m = 1 would signify perfect concordance, while values below 1 represent that the modality is on average underestimating the copy number when compared to PFGE.