A phenomenological description of the fatigue life of engineering components can be given either by plotting the applied stress range as a function of the total number of cycles to failure, i.e., according to the Wöhler's curve, or, after the advent of fracture mechanics, by plotting the crack growth rate in terms of the stress-intensity factor range, i.e., using the Paris' curve.
For each primer pair, we determined the PCR efficiency and the dynamic range of PCR by plotting the threshold cycle (Ct) values generated over a range of dilutions against the log input of cDNA amount.
The IC50 (concentration providing 50% inhibition) values were calculated using the dose inhibition curve in linear range by plotting the extract concentration versus the corresponding scavenging effect.
This is commonly calculated by plotting the mass specific power at a range of speeds and extracting the gradient of the best-fit straight line, and then using this value as the speed averaged mass specific cost of locomotion [3], [6], [7].
This tests whether the two instruments behave in the same way across the entire scaling range of the instruments, by plotting the difference between measurements made by the two instruments in the same individual against the mean of the two measurements.
The range of endoscopic severity was graphically checked by plotting the mean severity level evaluated by VAS as a function of its rank order.
The linear range for each PCR was established by plotting the intensity of the signal vs. the PCR cycle number.
An FDR-adjusted P-value (Padjusted) sensitivity plot was generated by plotting the number of genes altered at every Padjusted value cut-off, with P-value thresholds spanning the range from Padjusted = 1 × 10−6 to Padjusted = 0.5.
Q-Q plots are obtained by plotting the quantile of one distribution against the same quantile of the other, for a given range of quantiles.
Normality was assessed by plotting the residuals.
