Error is the difference between the true value and the observed value. Errors are unavoidable in analytical measurements and may arise from various sources during experimentation.
Accuracy refers to the closeness of a measured value to the true value, whereas precision indicates the reproducibility of repeated measurements.
Significant figures indicate the reliability of experimental data. Proper use of significant figures is essential in pharmaceutical calculations.
Calculations related to percentage purity, dilution, molarity, normality, and concentration are routinely used in pharmaceutical analysis.