**The Basics**

**Starting Minitab:** Minitab operates in a windows environment which
is available on the computers in VZN 142 & 152, Lubbers Hall, second
floor, and other locations. The program can be accessed by selecting (click
on, using left mouse button), in order, `Start` Þ
`Academic` Þ `Mathematics`
Þ `Minitab` (with logo). After
a short wait Minitab will be operating.

**Getting Data from our Text off the Hope system:** Pull down the
`File` menu located in the upper left portion of the screen to `Open
Worksheet`. In the `Files of type:` box use the down arrow to
find `Minitab Portable [*.mtp]`. Type `w:` in the `File
name:` box and hit Enter on your keyboard. You should now see a number
of folders displayed. Double click on the `Math folder` and then
on the `Math 210 Data` folder. Double click on the chapter for which
you want data. The files within this chapter will then be listed. The Math
210 Data files have prefixes of `eg` for example, `ex` for
exercise, and `tab` for table. Double click on the file of your
choice. You may change the column headings if desired.

**Getting Data from our Text off the CD:** Pull down the `File`
menu located in the upper left portion of the screen to `Open Worksheet`.
In the `Look in:` box at the top of the window find the `Bps
2` listing inside your CD driver. Double click on `Datasets`
then `PC DATASETS` then `Minitab`. Again use the down arrow
to find `Minitab Portable [*.mtp]` in the `Files of type:`
box. You should now see the chapter folders. Double click on the chapter
for which you want data. The files within this chapter will then be listed
with the same prefixes as above.

**Saving a Worksheet or Project:** You must save to a disk in the
**a**-drive. Make sure you have a disk in the **a**-drive. Next,
pull down the `File` menu to `Save Current Worksheet As...`,
or `Save Project As ...` and open up the **a**-drive. (`Save
in:` 3[1/2] `Floppy (A)`.) We are using Release 13 so `Save
as type: Minitab`. After `File name:` type in a file name and
then click on `OK` to save it to your disk.

**Your own data:** Minitab can be used to analyze your data. Either
input your data from the keyboard, your disk, or copy from Internet. If
you input data from the keyboard, you may save it for future use by inserting
a disk into the **a**-drive and saving it on the disk.

**Printing a Window:** To print an active window from Minitab, pull
down the `File` menu to `Print Window...` or click on the
`Print Icon`. Answer the questions asked and select `OK`.

**Exiting Minitab:** To exit Minitab, pull down the `File`
menu to `Exit`. Or, you may click the **x** in the upper right
hand corner of the screen.

**Graphing and Calculating Statistics**

**Constructing a Histogram:** Select `Graph` Þ
`Histogram`. Choose the data you want to graph. Either double click
on the data name OR click on the data name and then on `Select`.
By choosing `OK`, Minitab will graph the data in its default mode.
You may want to change the number of classes, midpoints, cutpoints, widths
or type of histogram. To do this, select the `Options...` button
on this window. This will allow you to change the horizontal axis from
displaying midpoints to cutpoints. It will also allow you to specify your
smallest and largest cutpoints (class boundaries), as well as the width
of the intervals. For discrete data, use `MidPoint` for `Type
of Intervals` and for the `Midpoint/cutpoint positions:` specify
`min:max/1`, where `min` and `max` are integers selected
by you. For continuous data, use `CutPoint` for `Type of Intervals`.
In `Midpoint/cutpoint positions:` type in - `smallest:largest/width`,
where `smallest` and `largest` are the smallest and largest
class boundaries and `width` is the class width. Three types of
histograms can be drawn.

**Constructing a Boxplot:** To construct a boxplot, pull down the
`Graph` menu to `Boxplot`. Choose the variable you want graphed
and put it in the `Y-column`. Press the `OK` button to see
the graph. Under `Options` you can have the boxplots plot horizontally
rather than vertically. When constructing more than one boxplot the data
can either be stacked or unstacked. When it is stacked, put categorical
data variable (1's and 2's, e.g.) in the `X-column` and the variable
you want graphed in the `Y-column`. For unstacked data, put each
variable you want graphed in separate cells in the `Y-column` and
then click on `Frame` Þ `Multiple
Graphs` Þ `Overlay graphs on the
same page`.

**Constructing a Scatterplot:** Select `Graph` Þ
`Plot`. Input your `X` and `Y` variables and click
on `OK`.

**Editing a Histogram, Boxplot, or Scatterplot:** To add, delete,
or move text on a histogram, boxplot or scatterplot, select `Editor`
from the top and then select `Edit`. You should now be able to block
things and `Delete` them under `Edit`. You can also add text
by clicking on the `T` at the upper right of the window.

**Constructing a Stemplot:** To construct a stemplot (Stem-and-Leaf
Diagram), select `Stat` Þ `EDA`
Þ `Stem-and-Leaf...`. Choose the
variables you want graphed and hit the `OK` button.

**Copy to Microsoft Word**: Graphs and Minitab output (highlight,
cut, and paste) can be copied into a Microsoft Word document. For graphs,
put cursor on the graph, click the right mouse button and `copy graph`.
Position the cursor in your Word document and `Paste` or use `CTRL-V`.

**Calculating Basic Statistics:** To calculate some basic statistics,
select `Stat` Þ `Basic Statistics`
Þ `Descriptive Statistics...`.
Choose the variables you want. Click on `OK` and Minitab will calculate
the sample size, mean, median, trimmed mean, standard deviation, standard
error, minimum value, maximum value, first quartile, and third quartile.

**Correlation and Regression:** To calculate the correlation coefficient,
select `Stat` Þ `Basic Statistics`
Þ `Correlation`. Input your two
variables and click on `OK`. To calculate the linear regression
equation, select `Stat` Þ `Regression`
Þ `Regression`. Input the dependent
(`Y`) variable as the response and the independent (`X`)
as the predictor. You may have to scroll up the session window to view
the result. An easy way to find both the correlation coefficient, the regression
equation, a scatterplot, and a graph of the regression equation is to select
`Stat` Þ `Regression` Þ
`Fitted Line Plot`. Input the response (`Y`) and predictor
(`X`) variables and click on `OK`.

**Significance Tests and Confidence Intervals for Means:** To perform
a significance test or construct a confidence interval for one or two means,
select `Stat` Þ `Basic Statistics`
and then either `1 sample t` or `2 sample t`. On the next
window you can choose a confidence interval (and the confidence level)
or a significance test (along with what you are testing against and the
direction of the test). When doing a matched pairs test you may want to
subtract one column of numbers from another. You do this in the session
window. Type `Subtract c1 c2 c3` to subtract column 1 from column
2 and place the results in column 3. Or, suppose that c1, c2, c3 are named
`x`, `y`, `d`, respectively. Select `Calc`
Þ `Calculator`, place `d`
in the `Store result in variable:` box and then type in your `Expression:`
in the box. Double click on `c1 x` to move `x` into the box,
then type in a minus sign, -, and then double
click on `c2 - y` followed by `OK`. Column `c3` will
now hold all the differences, `c1 - c2`.

**Chi-Square Test:** To perform a chi-square test of independence,
select `Stat` Þ `Tables`
Þ `Chisquare Test`. Input the columns
of your table and click on `OK`.

**ANOVA:** To perform an analysis of variance, select `Stat`
Þ `ANOVA` Þ
either `oneway` or `oneway (unstacked)`. If the data are
stacked, input the variable that you want to test as the response and the
categorical data (1's and 2's, e.g.) as the factor. If the data are unstacked,
input the response variables you want to test and click on `OK`.

File translated from T

On 30 Aug 2000, 10:09.