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# What is a scattergram used for?

**A scattergram or scatter plot defines a relationship between two variables related to cause and effect.** According to the American Society of Quality, a scattergram illustrates pairs of numerical data on graphs with one variable on each axis to explore the relationship between them.

On a scattergram, points fall along a line or curve where variables are correlated. Scattergrams also identify root causes of problems, determine objectively if a cause and effect are related, and figure out if two effects that appear to be related are caused by a similar course. Scattergrams can be constructed in MS Excel or statistical software such as XLSTAT.

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## What is a direct variation graph?

A: A direct variation graph represents a situation in which two variables increase or decrease at the exact same rate. The line on the graph is a straight lin... Full Answer >Filed Under: -
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## What is a MATLAB 3-D plot?

A: A MATLAB 3-D plot is a three dimensional graphical display of either a function or data points produced by MATLAB. MATLAB is both a programming language an... Full Answer >Filed Under: -
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## How do you do a box-and-whisker plot?

A: Create a box-and-whisker plot by finding the middle, upper and lower medians of a given data set to determine the position of each quartile. Use the corres... Full Answer >Filed Under: -
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## What is a cumulative frequency polygon?

A: A cumulative frequency polygon is a plot of the cumulative frequency against the upper class boundary with the points joined by a line segment. An ogive is... Full Answer >Filed Under: