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# Data Analysis(Cluster Analysis)

Included with this assignment is an Excel spreadsheet that contains data with two dimension values.

The purpose of this assignment is to demonstrate steps performed in a K-Means Cluster analysis.

Review the "k-MEANS CLUSTERING ALGORITHM" section in Chapter 4 of the Sharda et. al. textbook for additional background.

Use Excel to perform the following data analysis.

- Plot the data on a scatter plot.
- Determine the ideal number of clusters.
- Choose random center points (centroids) for each cluster.
- Using a standard distance formula measure the distance from each data point to each center point.
- Assign each data point to an initial cluster region based on closeness.
- For each cluster calculate new center points.
- Repeat steps 4 through 6 once.

You will use Excel to help with calculations, but only standard functions should be used (i.e. don't use a plug-in to perform the analysis for you.) You need to show your work doing this analysis the long way. **If you were to repeat steps 4 through 6, what will likely happen with the cluster centroids? ** The rubric for this assignment can be viewed when clicking on the assignment link.

Here is a link to an example spreadsheet using a smaller data set. It contains two tabs. The first tab is the raw data. The second tab contains the analysis that was performed. Make sure that you use a different starting center points from the example.