Stacking several columns together
Minitab will prefer data set up as columns, and often, it is better to stack data together, using one column for all the results, and a second or third column to group the information together. Here, we will stack several numeric columns together into one column.
Getting ready
We want to stack several columns together to give a column of results and an indicator column to identify the group they belong to.
We require a worksheet with several columns of the same data type. In this example, we use data from the Party Membership of US Senators file. This data can be found at
http://mathforum.org/workshops/sum96/data.collections/datalibrary/data.set6.html.
This data is in the Excel file format. Download the file senators.xls ...
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