When the information was collected by the investigator herself or himself with a definite objective in her or his mind, the data obtained is called  dataHistogrammeanMedianmodepictorial representationprimary datasecondary dataStatistics.

In the second case, when the information was gathered from a source which already had the information stored, the data obtained is called  dataHistogrammeanMedianmodepictorial representationprimary datasecondary dataStatistics.

Facts or figures, collected with a definite purpose, are called  dataHistogrammeanMedianmodepictorial representationprimary datasecondary dataStatistics.

 dataHistogrammeanMedianmodepictorial representationprimary datasecondary dataStatistics is the area of study dealing with the presentation, analysis and interpretation of data.

A bar graph is a  dataHistogrammeanMedianmodepictorial representationprimary datasecondary dataStatistics of data in which usually bars of uniform width are drawn with equal spacing between them on one axis (say, the x-axis), depicting the variable.

 dataHistogrammeanMedianmodepictorial representationprimary datasecondary dataStatistics is a graphical representation of a grouped frequency distribution with continuous classes.

The  dataHistogrammeanMedianmodepictorial representationprimary datasecondary dataStatistics of a number of observations is the sum of the values of all the observations divided by the total number of observations.

The  dataHistogrammeanMedianmodepictorial representationprimary datasecondary dataStatistics is that value of the observation which occurs most frequently.

 dataHistogrammeanMedianmodepictorial representationprimary datasecondary dataStatistics is the value of the middle-most observation.