TABULAR PRESENTATION OF DATA
This refers to the number of times a value appears in a data set.
Frequency
This graph is also called a circle chart and always adds up to 100%.
Pie chart
This type of frequency distribution is used when the number of observations is below 30.
Ungrouped frequency distribution
This graph uses rectangles of equal width to represent nominal or ordinal data.
Bar Graph
This is obtained by multiplying the relative frequency by 100.
Percentage (p)
This graph is used for interval or ratio data and has bars that touch each other.
Histogram
_____ in a distribution is the midpoint of a given class.
Class mark
This graph plots points at the midpoint of class intervals and connects them with lines.
Frequency polygon
It is the highest value that can belong to a class interval.
Upper class limit
It is claimed that data presented in graphical form is easier to grasp and more interesting to read.
Graphical Presentation of Data