Graphic Presentation

Histogram:

A graph in which the classes are marked on the horizontal axis and the class
frequencies on the vertical axis. The class frequencies are represented by the heights of
the bars and the bars are drawn adjacent to each other.

Frequency polygon:

A frequency polygon consists of line segments connecting the points formed by the class midpoint and the class frequency.

Cumulative frequency distribution(ogive):

It's used to determine how many or what proportion of the data values are below or above a certain value.

Bar chart:

A bar chart can be used to depict any of the levels of measurement (nominal, ordinal, interval, or ratio).

EXAMPLE : Construct a bar chart for the number of unemployed people per 100,000 population for selected cities of 1999.

Pie chart:

A pie chart is especially useful in displaying a relative frequency distribution. A circle is divided proportionally to the relative frequency and portions of the circle are allocated for the different groups.

EXAMPLE : A sample of 200 runners were asked to indicate their favorite type of running shoe.