Linearity of calibration curve

1. What is linearity in calibration?
2. What is the importance of linearity in calibration curve?
3. What is linear range of a calibration curve?
4. What is the linear equation of calibration curve?

What is linearity in calibration?

Linearity is an objective description of the relationship between a quantitative method's final answer and true analyte concentration. Calibration brings this relationship into correspondence with calibrator concentration.

What is the importance of linearity in calibration curve?

Linearity is an important and desirable feature of an analytical method. For example, if a calibration function is linear, then it is easier to estimate the equation, and evaluation errors (errors in estimating unknown concentrations from the calibration function) are likely to be smaller.

What is linear range of a calibration curve?

Linear range or linear dynamic range – The range of concentrations where the signals are directly proportional to the concentration of the analyte in the sample.

What is the linear equation of calibration curve?

The relationship is described by the equation of the line, i.e., y = mx + c, where m is the gradient of the line and c is its intercept with the y-axis. Linear regression establishes the values of m and c which best describe the relationship between the data sets.