Measurement and Data Processing

Qualitative Data: Qualitative data are non-numerical data. These data are obtained from observation during the experiment.

Quantitive Data: Quantitive data are numerical data, which are obtained from measuring or calculation

Precision: Precision refers to closeness between measured results. 

Accuracy: Accuracy refers to closeness between measured results and the true value.

Systematic Error: Systematic error is introduced by the apparatus or procedure of the experiment, remains consistent.

Random Error: Random error describes the fluctuation between measured values.