How to eliminate systematic errors? it is necessary to measure the investigated parameter several times with the same device before the experiment . it is necessary to check the used device in a specialized laboratory involve a colleague to take measurements completely systematic errors cannot be avoided

The correct answer is: it is necessary to measure the investigated parameter several times with the same device before the experiment.<br /><br />Systematic errors are errors that consistently occur in the same direction and can be caused by factors such as calibration errors, instrument drift, or environmental conditions. To eliminate systematic errors, it is important to measure the investigated parameter several times with the same device before the experiment. This allows for the identification and correction of any systematic errors that may be present in the device. Additionally, involving a colleague to take measurements can also help in identifying and eliminating systematic errors.