The Graphical Summary… tool is a quick way of producing an overview of a column of data. The following example shows us the output comprising a histogram, the Anderson-Darling test for normality, mean, standard deviation, and more.
Here, we will use the data from the Oxford weather station and produce a summary of the amount of rainfall in mm for each month, for all the results from 1853 onwards.
We will use the data from the Oxford weather station in this example. This data is from the Met Office website and can be found at http://www.metoffice.gov.uk/climate/uk/stationdata/. Select the Oxford station.
The data is made available in the Oxford Weather.txt
file; this preserves the format from the website. This data is also available in the Minitab Oxford weather (cleaned).mtw
file, and using this worksheet correctly imports itself into Minitab for us.
The following steps will import the weather station's data and then produce a summary of rainfall seen in each month from 1853 to 2013:
Oxford Weather.txt
file.6
.8
.The columns in Variables populate the summary statistics and the optional selection of By variables (optional) allows us to split a set of data into separate summaries. Using the month as By variables (optional) creates a summary for each month. The following screenshot shows us the results for July:
If we want to view the results from only one month, say July, instead of generating a summary for all months, we can use the Split Worksheet… or Subset Worksheet… tools. These can be used to generate new datasets using the results contained within a single month.
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