Minitab 19 Product Key 18 Digits Free
Ji Weinheimer
Click on File in the main Mtb window to open Mtbfiles. You can open Mtb projects (file extension .mtj), Mtbworksheets (file extensions .mtw, .mtb, .mtp and others), and Mtbgraphs (file extension .mgf). You can also open spreadsheets andtext files. Usually you'll be interested in projects andworksheets.
Projects contain also records of what happened in the session window, graphs, a list of all variables that are currently stored, possibly a report in MS Word format etc. You can open only one project at a time.
To save a worksheet, click on File > Save CurrentWorksheet or File > Save Current Worksheet As ... andfollow the prompts. Have a USB drive or some othermedia ready to save your worksheet.
To save a project, click on File > Save Project andfollow the prompts. Whenyou save the project, you save all the information about yourwork: the contents of all the windows, including the columns ofdata in each Data window, stored constants and matrices, thecomplete text in the Session window and History folder, and eachGraph window. This allows you to interrupt your work andpick up later where you left off.
Activate the data window by clicking on it.
Check to insure that the arrow in the box in the upper leftcorner of the data window page is pointing downward (click on itto switch it).
Place the name of your variable in the top cell of the column(directly under C1, or whatever column you put your datain). Move the cursor to the first cell in your columnand enter your first data value. Press Enter. If thearrow in the upper left corner is pointing down, the cursor willautomatically move to the next cell in the column. You can alsouse the up and down arrows or the mouse to move to other cells.Continue until you have all the values of that variable enteredinto that column. Don't leave any empty cells.
Move to the next column and repeat the steps with your nextvariable.
Minitab considers a data column as numerical as long asall entries in its cells are numbers. If one or more cells arenon-numerical (text, symbols), the entire data column isconsidered categorical, and the column label is changedfrom e.g. C2 to C2-T. Integer entries with spaces are interpretedas dates, and the column label is changed from C2 to C2-D.It can be tedious to undo such a change in data type, so becareful when entering data.
To copy data (cells, groups of cells or columns) within a Mtbdata window or between data windows, select the cells with themouse. You can also select a group of columns (highlight thecolumn names instead of the cells).
Go to Edit > Copy Cells.
Move the mouse to the location where you want to enter the dataand go to Edit > Paste Cells.
You can also copy and paste data to and from other applications(spreadsheet columns, text files) in this manner.
Caution:
These boxes pop up when you choose submenus from the Data,Calc, Stat, and Graph menus.
All dialog boxes list available variables in a big window on theleft and expect input in smaller fields on the right.
Click in a Variables input field to activate it.
Select one or more variables from the list on the left by typingits name in the input field or by highlighting it and clicking onthe Select button. Double-clicking on the variable name alsoworks.
Other fields expect you to enter the location of output data orto enter numerical values. Radio buttons or check boxes maychange the options for input. Click on OK when you are done.
Click in the Graph Variables input field to activateit.
Select one or more variables from the list on the left by typingin its name or by highlighting it and clicking on the Selectbutton.
Design your graph with the Data View window (e.g. symbolsor connected points or bar graphs). Available choices appear whenyou click on the arrow symbols. Scale, Label,and Data Options provide ways to add titles andlegends, control the axes, spacing of tick marks, grids etc..
To generate Multiple Graphs, click on thecorresponding button Frame > Multiple Graphs. Byclicking on the appropriate radio button, you can overlay severalgraphs on the same page (e.g. side by side box plots).
Click on OK when you are done.
Go to Graph > Stem-and-Leaf.
Use the Graph Dialog window to selectthe desired variable.
Within the dialog box you can choose to trim outliers (click inbox) or adjust the stem increments (i.e. split or combine stems).
Click OK to generate the plot.
The plot will appear in the Session window.
Your two-way table may be in a single column (say in thecolumn DATA) , with classification variables for the table rowsand columns in two other columns (say in columns ROW andCOLUMN). Alternatively it may in the form of several columns,e.g. with labels DATA1 and DATA2, properly lined up, with anadditional column, say ROWS, for the row labels.
This can be done either by using the Data View, Scale, Labels,Data Options buttons in the main dialog window before the charthas been made, or by editing portions of the chart after it hasbeen made. See the section on changing thelook of a histogram.
In the Graph Dialog box, selectthe variable(s) for which you want to make a histogram. Note thatyou can choose several variables at once, so it is possible tomake histograms of several different variables simultaneously.These will usually appear in separate graph windows, unless youchoose to have graphs overlaid on the same page in MultipleGraphs.
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Go to Graph > Boxplot.
Choose a graph type from the top or bottom row. "SimpleY" here means that the data are in a single column,"Multiple Y's" means several columns. Choose "WithGroups" if there is an additional column of categoricalvariables for classification. This will allow you to makeside-by-side boxplots for comparison.
A graph can be moved around on the screen, its size may bechanged as any other window, and it may be closed. Once agraph has been closed, it is gone and must be recreated. Inaddition, the menu bar item Window will allowyou to manage the histograms. With Window > Close allGraphs you can clean up a cluttered work area.
To copy a graph to a report (e.g. to MS Word), righ-click on itand select Copy Graph, then paste the graph intoyour report. In MS Word it is possible to resize the grapheasily.
Go to Calc > Standardize.
Select the data columns you want to standardize in the Dialog box and enter the column where thestandardized columns go. Leave the radio button at "subtractmean and divide by standard deviation". Click OK.
To find the probability that a variable with a normaldistribution is less than a certain value, say X, click the radiobutton "Cumulative probability".
Enter the mean and standard deviation.
Click the button "Input constant" and enter the value Xin the field.
Click OK.
The answer appears in the session window.
To find a value x such that a variable with anormal distribution is less than x with givenprobability p, click the radio button "Inversecumulative probability".
Enter the mean and standard deviation.
Click the button "Input constant" and enter theprobability p in the field.
Click OK.
The answer x appears in the session window.
The result is a normal quantile plot, flipped about thediagonal: The normal probabilities (probabilities for z-scores)are plotted against the data. The plot also has a straight lineand error boundaries for comparison.
Select your variable(s) in the Series window. Mtb willassume that the index of the data is the time variable. You canchange this in the graph dialog window by clicking on Time/Scale.
The Data View button allows you to change the appearanceof the time plot and to make a smoothed scatterplot.
Go to Stat > Tables > Chi-Square test (Table in Worksheet).
Enter the columns that contain the table and click on OK.Select the twovariables for rows and columns.in the Classification variables window.
The results of the Chi-Square test for independence will be displayed in thesession window (degrees of freedom, expected cell counts, cell contributions toc2, overall value of c2, p-value).
To compute row percents and column percents, stack the columns of thetable with Data > Stack > Columns to turn the table into a single column. Makesure there are row and column subscripts in two separate columns (Minitab willmake the column subscripts automatically). Then proceed as above.
Go to Data > Copy > Columns to Columns.
After entering the columns to be copied and the destination inthe dialog window, click on Subset and enter the rows to be usedor to be excluded.
To draw a simple random sample from data stored in a column,go to Calc > Random Data > Sample from Columns.
Select the column you want to sample from, enter the size of yoursample (Sample ... rows from column) and enter the columnwhere the samples are to be stored.
Choose whether you want to sample with or without replacement(check box) and click OK.
To make a list of random digits, go to Calc >Random Data > Integer.
Enter how many (groups of) random digits you need in"Generate ... rows of digits".
Enter the column where the digits are to be stored.
To get single digits, choose Minimum value = 0 and Maximum value= 9. To get two-digit groups, choose Minimum value =0 and Maximum value = 99. Of course, other choices are alsopossible.
Click OK to generate the random digits.
Work with the digits just like you would work with random digitsfound in a table.
The worksheet should open in MLwiN, and you should see that missing values, descriptions of variables, and category labels for categorical variables have all been transferred across correctly. It is now possible to save the worksheet as an MLwiN worksheet in the usual way.
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