Fig. 2
From: A benchmark for microRNA quantification algorithms using the OpenArray platform
Relationship between quality and expression. For both data sets, a measure of data quality, (a) Life Technologies (LifeTech) AmpScore or (b) qpcR R-squared, is plotted against the corresponding expression estimates. The qpcR R-squared values are plotted on the complementary log-log scale to improve visibility in the region of interest. Each point represents a single expression measurement and corresponding quality measure for a unique miRNA/sample combination. Two-dimensional scatter-plot smoothing is used to avoid over-plotting and convey the distribution of points across the plotting region