Define Analytical chemistry. Why is accurate measurement crucial in science?

When measurements are not accurate, this provides incorrect data that can lead to wrong conclusions. For example, if a laboratory experiment requires a specific amount of a chemical, then measuring the wrong amount may result in an unsafe or unexpected outcome.

Hence, the numerical data obtained experimentally are treated mathematically to reach some quantitative conclusion.

Also, an analytical chemist has to know how to report the quantitative analytical data, indicating the extent of the accuracy of measurement, perform the mathematical operation and properly express the quantitative error in the result