Graphical Representation of Data- Part-1 – Tables & Tabulation
(Tabulation of Data and Things to Remember when Creating a Data Table)
“Science is organized knowledge…
Wisdom is organized life…
What is Data or Variable?
Ø Data or variables in biostatistics (statistics) are individual observations of a natural phenomenon or an experiment.
Ø All scientific investigations involve observations on the variables.
Ø Observations made on these variables are obtained in the form of DATA.
Ø The reason for calling data as variables is because it has the tendency of variation.
Ø For example, if you take the size of leaves of a rose plant with many leaves the value of the size of each leaf (individual data) shows variation.
Ø The individual observations form the data and the data thus collected are called Raw Data.
Ø The raw data is an ungrouped or unorganized data and it should be classified based on some criterions.
Ø Only the classified or grouped data can be used for logical interpretations and further statistical analysis.
Data Representation Methods
Ø Data presentation (representation): ‘For the maximum utilization of data and its correct interpretation, it should be presented in an appropriate way’.
Ø Different types of data representations methods are:
(2). Graphs / Charts