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ODStatistics tutorial

2. Data entry

All ODStatistics worksheets have a Data area. This area is where data have to be entered. You can enter data directly cell by cell in this area, if you want, but it is much better to organize the data in a separate spreadsheet and afterwards paste them to the approppriate ODStatistics workwheet.

Data organization

Data have to organiezed in the "standard" way, that is with variables in columns and each case or observation in a separate row. The first row should contain the names of the variables being used. ODStatistics worksheets have a limit of 200 cases.

Options to enter data

You can use the edition options of your operating system (Windows, Mac or Linux) and OpenOffice edition options to copy the data from your own spreadsheet into the Data area of ODStatistics worksheets.
Let's work out an example. Follow the next steps:
  1. Create a OpenOffice Calc spreadsheet with a variable called Euros and enter 10 cases with the following values: 10, 15, 20, 22, 23, 27, 29, 30, 36, 40. Your spreadsheet should look as follows:

  2. Choose the column that you have created and copy it to the OpenOffice Calc clipboard. This is done by highlighting with the mouse the column (do not click on the column letter to highlight the whole column because it would not work):

    Now you have to open the "Edit" menu and choose "Copy" (you can also do it by pressing the Contol (Ctrl) or equivalent key and then C):

    The data is now available at the OpenOffice Calc clipboard so that it can be imported to another Calc spreadsheet or any other software.
  3. We will now open the "odstats" spreadsheet (if yo do not remember how, return to "Index") and choose "1NUM" (worksheets to analys one numerical variable):

    Double-clicking over 1NUM the analysis worksheet for datasets with one numerical variable will be opened, and we will see the initial screen of these worksheets:

    All the ODStatistics worksheets have a common structure: a first worksheet called "Help", a second worksheet called "Data Entry" and another one called "Summaries". Sometimes there are some other worksheets ("Extra tools", and so on).
    The first worksheet, "Help", provides basic information on how "1NUM" works. As it name suggests, to enter the data the "Data Entry" worksheet is used, and also some basic descritions can be found there. The third worksheet, "Summaries", provides the most common numerical and graphical summaries for the corresponding dataset (1 numerical variable, 1 categorical variable, different combinations or other types of data).
    The different worksheets can be found at the bottom of the spreadsheet:

    To enter the data we have to go to the "Data Entry" worksheet. A spreadsheet, like 1NUM, may have different worksheets. The names of the different worksheets of a spreadsheet can be found at the bottom of each screen of the spreadsheet. Clicking over these names we can go to the different worksheets. Now you have to click over "Data Entry" to go to this worksheet:

    We will see already some data and its corresponding numerical and graphical summaries when we open ODStatistics worksheets. These data are obviously not your data and to obtain the summaries corresponding to your data you have to enter them into the corresponding area. Another commment before entering our data is that double-clicking over any label that we see in red, we will obtain help on the features of the corresponding section. For instance if we double-click over "Numerical summaries", the label seen at the table in the upper part of the "Data Entry" worksheet, we will get the following dialog:

  4. At the A1 cell we can find Data also in red, and therefore we know that we will get a dialog, but this one is a bit special. If we do not have anything at the clipboard we will get a help dialog on hoow to enter data into 1NUM, but if we do have data in the clipboard we will get a dialog asking us if we want to enter them into 1NUM (we could also have some other data from a wordprocessing application in the clipboard so we have to make sure that what we have is the data that we really want to analyze). If we stil have in the clipboard the data from our example that we created previously we can continue, otherwise we have to copy them again into the clipboard.
    Double-click then over the A1 cell, where it says Data. You will get the following dialog:

    If you did not get this dialog you should copy again the data into the OpenOffice clipboard. Click over "OK" and your data will be pasted into the "Data Entry" worksheet:

    You have already your data in the "1NUM" worksheet. Now you can start your data analysis.

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On 27 Sep 2009, 18:12.