While the diagram shows relationships, it does not by itself prove that one variable causes the other. In addition to showing possible cause- and-effect relationships, a scatter diagram can show that two variables are from a common cause that is unknown or that one variable can be used as a surrogate for the other. When to use it: Use a scatter diagram to examine theories about cause-and-effect relationships and to search for root causes of an identified problem.
Use a scatter diagram to design a control system to ensure that gains from quality improvement efforts are maintained. How to use it: Collect data. Gather 50 to paired samples of data that show a possible relationship. Draw the diagram. Draw roughly equal horizontal and vertical axes of the diagram, creating a square plotting area.
Label the axes in convenient multiples 1, 2, 5, etc. Label both axes. Plot the paired data. Plot the data on the chart, using concentric circles to indicate repeated data points. Title and label the diagram.
Interpret the data. Scatter diagrams will generally show one of six possible correlations between the variables: Strong Positive Correlation The value of Y clearly increases as the value of X increases. Complex Correlation The value of Y seems to be related to the value of X, but the relationship is not easily determined. No Correlation There is no demonstrated connection between the two variables. Edraw is used as a scatter plot software containing built-in scatter plot symbols and ready-made scatter plot templates that make it easy for anyone to create attractive scatter plots.
The scatter plot templates are easy to use and free. Scatter chart displays numerical values along the horizontal and the vertical axis, combining these values into single data points that are displayed in uneven intervals. You can begin to create a scatter plot diagram by choosing a template. Free Download Scatter Plot Template. If you want to use a ready-made template, go to scatter plot templates page and choose the Scatter Plot that best suits you.
When you finish creating your scatter plot in Edraw, one click on the Export button will transfer your drawing into MS PowerPoint presentation.
In order to save the template as a design template, you need to download Edraw and edit it. All templates in the software gallery windows can be freely changed in color, theme and effect. View a Word Scatter Plot Template. All are pretty simple. A scatter chart analysis template is available from data. Scatter plot is similar to line chart in that they both start with mapping quantitative data points.
The difference is that the decision is made that the individual points should not be connected directly together by a line, but express a trend instead. A blank scatter plot template ready for you to add data. The template is printable and can be used for home or office free of charge.
A bubble plot is extremely useful graph that displays three dimensions of data.
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