"Steam and Leaf Plot"

Stem and Leaf

The digit in the greatest place value of the data values are the stems. The digits in the greatest place values are the leaves. Stem and leaf plots are often used in mathematics. The  picture above shows the number of infant mortalities in Western Africa. The greatest number of mortalities is 151 deaths according to this data.

"Cadastral"

Cadastral

Cadastral maps are an essential part of the land management infrastructure. These maps are generally expensive and take a long time to make. Cadastral maps are also used to show land ownership and property.

"Star Plot"

Starplot

A star plot is a graphical data analysis technique for examining the relative behavior of all variables in a data set. Variables are represented by "spokes." The length of each spoke reveals the magnitude of the variable of the subset.

"Black and White Aerial"

Black and White

Aerial photos are photos taken from birds eye views. There are two types; oblique and vertical shots. An oblique shot is one that is taken from a low point relative to the object, while a vertical is taken from a relatively high point directly overhead. The map above is a vertical aerial shot since the camera is pointing straight down.

"Correlation"

Correlation

We identify correlation with the relationship between two variables. There are positive correlations and negative correlations. A positive correlation happens when both variables move in the same direction. For example the amount of time spent studying and test scores are positively correlated.

"Windrose"

Windrose

Windrose maps show wind frequency and direction. These maps can also be interchanged as what we refer to as a compass rose.

"HISTOGRAM"

"Histogram"

A histogram gives a visual representation of a data set . Histograms allow us to visually recognize distinctions of numerical information. The rectangles are tabular frequencies that can either be touching or separated. Histograms are useful when trying to recognizer the mode in a data set. Based on the information displayed i the graph we can clearly see that the majority of employees working for this business make between $21,000-$4290 per year.