Fig. 2.

Show the dots on plots: scatter graphs allow readers to evaluate data distributions for themselves. Biofilm formation was measured for Pseudomonas aeruginosa strains CF39S and CF39, which express functional and mutant alleles of the thermosensory diguanylate cyclase (tdcA⁺ and tdcA⁻), respectively. Each condition has 48 replicates, representing sixteen technical replicates from each of three independent biological replicates. (a) Line graph. Datum points represent means and standard deviations. (b) Scatter plot. Each point denotes a replicate datum point and lines and bars represent means and standard deviations, respectively. (Data courtesy of Joe J. Harrison).