Getting Started with Minitab 14 for Windows - ISS - University of Leeds

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Getting started with Minitab 14 for Windows To save changes to the individual files, save the worksheet or graph separately. Saving a project and its parts To save a project, choose File > Save Project As… from the menu. Type in a filename in the File name: box and choose a suitable directory to store the file in and click Save. The first time a file is saved, choosing File > Save Project from the menu (or pressing CTRL+S) has the same effect as using File > Save Project As… Once the project has been named, using File > Save Project will automatically overwrite the existing file without requiring entry of a file name. To save the individual parts of a project choose: Type Instruction Notes Project File > Save Project As… Worksheet File > Save Current Worksheet As… Session Window File > Save Session Window As… Graph File > Save Graph As… History file TXT, MTJ Minitab Project (MPJ) Available file types are: Minitab worksheet (MTW), Minitab 12, 11, or 10 worksheet (MTW), Portable worksheet (MTP) , Text file (DAT, TXT) , Excel file (XLS), Lotus 1-2- 3 files (WK?), Quattro Pro file (WB1, WQ1), dBASE/FoxPro file (DBF), Web Page (HTML). Mintab Session (TXT), Rich Text Format (RTF), Web Page (HTML), List File (LIS). The default graph type is MGF (Minitab Graph). Other types are also available: JPEG (Joint Photographic Experts Group), TIFF (Tagged Image File Format), PNG (Portable Network Graphics), BMP (Windows Bitmap). For high quality printing, use EPS (encapsulated postscript). Note that an EPS file cannot be viewed in a word processor. Note: It is good practice to save a worksheet as a separate file, so that it will be stored safely even if the project is corrupted. Information Systems Services Page 12 of 30 2.1
Getting started with Minitab 14 for Windows Minitab Data In Minitab, data are contained in a worksheet. This looks similar in appearance to a spreadsheet, but in Minitab cells do not contain formulae that update results automatically. If a calculated variable is created from existing variables, and then the value of one of those variables is updated, the value of the calculated variable will not be updated automatically. A Minitab project may contain several worksheets. Rows in the worksheet represent cases. Columns represent attributes of the cases and are known as variables. Quantitative variables are measured on an ordinal, interval, or ratio scale; for example, measuring heights and weights. Qualitative (categorical) variables are measured on a nominal scale; for example gender or machine number. During an experiment, “independent variables” or factors are set by the experimenter; while “dependent variables” are observed and measured. There are three types of data: • Numeric numbers • Text text, numbers, spaces or special characters • Date / Time dates e.g.1/1/04, times e.g. 10:20:30AM or both Note: Although dates can be formatted in a variety of ways, Minitab stores them internally as numbers and so they can be used in calculations. Data can take three forms: • Column • Constant • Matrix Columns may consist of numbers, text or date / time data. A column can be referred to either by the letter C followed by a number, e.g. C1 or by a variable name. Constants may contain a single number or a text string e.g. “Paris”. A constant can be referred to either by the letter K followed by a number, e.g. K22, or by a variable name. Matrices contain a rectangular block of numbers, and may be referred to either by the letter M followed by a number, or by a variable name. The following restrictions apply to variable names: • The length may not exceed 31 characters • They must not begin or end with a blank • They must not include the symbol ' or # • They may not begin with, or consist entirely of, the symbol * • They must not be repeated: the same name cannot be used for two variables (columns, stored constants or matrices) in the same worksheet Information Systems Services Page 13 of 30 2.1
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Getting Started with Minitab 14 for Windows - ISS - University of Leeds

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