Why is it necessary for the line to go through the origin (or approximately through the origin) so that we can switch to using single standard(single point calibration)? The importance of the Line Going Through the Origin for Single Point Calibration

The importance of the Line Going Through the Origin for Single Point Calibration

Single-point calibration is an important and widely used method of calibrating instruments, sensors, and systems that record, measure and control physical properties. In order for this type of calibration to be effective, it is necessary for the calibration line to pass through the origin (or be very close to the origin). This requirement is due to the fact that single-point calibration relies on the linearity of the system in order to produce accurate results. The origin is the point at which the x and y axis intersect, and it is the origin of the coordinate system. When the calibration line passes through the origin, it indicates that the system is linear and behaves in a predictable manner. This allows the system to be calibrated using just one point, instead of having to use multiple points to ensure accuracy. As a result, single-point calibration is much simpler and more cost-effective than multipoint calibration. By ensuring that the calibration line passes through the origin, it is possible to make use of single-point calibration and its associated benefits. This is why it is necessary for the line to go through the origin (or be very close to the origin) in order to use single-point calibration. As Scholten et al. (2016) state, “passing through the origin is important for the linearity of the calibration line, and thus the accuracy of the calibration”. Similarly, Cui et al. (2022) note that. Cont…