The x-value you plan to calibrate with the estimated calibration equation
d0
The required length of the 95% confidence interval of the calibrated x-value based on the estimated calibration equation. The narrow confidence interval require a large sample size.
x
The empirical observations of the target distribution from which $x$-values will be drawn in the planned study.
CVx
The underlying coefficient of variation of measurement $x$
CVy
The underlying coefficient of variation of measurement $y$
Value
size
The sample size needed for estimating the calibration equation based on (1) CVx only; (2) CVy only; (3) both CVx and CVy; and (4) the ratio of CVy^2/CVx^2.