Minitab Cheat Sheet for Descriptive
Statistics
All of the following procedures
assume you have already entered your data correctly into one (or more)
of the columns in the Minitab Data Window.
To produce a one-way distribution
table for categorical data:
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Select Stat.
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Select Tables.
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Select Tally.
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The Tally Pop-Up Window will appear.
In the left box, click once on the variable you want analyzed. Click once
on the Select button. The column name (or variable name) will appear in
the box labeled Variables.
-
Under Display, click on the appropriate
box(es) to select the statistics that you want calculated. Counts,
Percents, and Cumulative Percents will give you a complete distribution
table as described in your text.
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Select OK. The output will appear in
the Session Window.
To produce a two-way distribution
table for categorical data:
-
Select Stat.
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Select Tables.
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Select Cross Tabulation.
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The Cross Tabulation Pop-Up Window will
appear. In the left box, click once on the variable you want to treat as
the row variable. Click once on the Select button. The column name (or
variable name) will appear in the box labeled Classification Variables.
Then, in the left box, click once on the variable you want to treat as
the column variable. Click once on the Select button. The column name (or
variable name) will appear in the box labeled Variables.
-
Under Display, click on the appropriate
box(es) to select the statistics that you want calculated. Counts
reports the number of units falling into each cell. Total Percents
reports the percent of all units falling into each cell (number in cell
divided by grand total). Row Percents reports percent in row falling
into each level of the column variable (number in cell divided by row total).
Column Percents reports percent in column falling into each level
of the row variable (number in cell divided by column total).
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Select OK. The output will appear in
the Session Window.
To create a stem-and-leaf plot:
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Select Graph.
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Select Character Graphs.
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Select Stem-and-Leaf...
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The Stem-and-Leaf Pop-Up Window will
appear. In the left box, click once on the variable you want analyzed.
Click once on the Select button. The column name (or variable name) will
appear in the box labeled Variables.
-
Select OK. The output will appear in
the Session Window.
To create a dot plot:
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Select Graph.
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Select Character Graphs.
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Select Dotplot...
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The Dotplot Pop-Up Window will appear.
In the left box, click once on the variable you want analyzed. Click once
on the Select button. The column name (or variable name) will appear in
the box labeled Variables.
-
If you want to create dot plot for more
than one variable simultaneously, click on the box labeled Same Scale for
all variables.
-
Select OK. The output will appear in
the Session Window.
To create a histogram:
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Select Graph.
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Select Histogram.
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The Histogram Pop-Up Window will appear.
In the left box, click once on the variable you want analyzed. Click once
on the Select button. The column name (or variable name) will appear under
the X in the box labeled Graph Variables. (If you would like a relative
frequency histogram rather than the default frequency histogram, click
on Options. Click on Percent. Select OK.)
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Select OK. A new graph window, which
contains the histogram, will appear.
To create a scatter plot:
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Select Graph.
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Select Plot.
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The Plot Pop-Up Window will appear.
In the left box, click once on the Y variable you want analyzed. Click
once on the Select button. The column name (or variable name) will appear
under the Y in the box labeled Graph Variables. In the left box,
click once on the X variable you want analyzed. Click once on the Select
button. The column name (or variable name) will appear under the X in the
box labeled Graph Variables.
Select OK. A new graph window, which
contains the scatter plot, will appear.
To calculate descriptive statistics:
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Select Stat.
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Select Basic Statistics.
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Select Display Descriptive Statistics.
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The Display Descriptive Statistics Pop-Up
Window will appear. In the left box, click once on the variable you want
analyzed. Click once on the Select button. The column name (or variable
name) will appear in the box labeled Variables.
-
Select OK. The output will appear in
the Session Window.
To create a boxplot:
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Select Graph
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Select Boxplot.
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The Boxplot Pop-Up Window will appear.
In the left box, click once on the variable you want analyzed. Click once
on the Select button. The column name (or variable name) will appear under
the Y in the box labeled Graph Variables.
-
Select OK. A new graph window, which
contains the boxplot, will appear.