Simple Interactive Statistical Analysis
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Go to data input procedure Categorical Table Input 2xr |
Explanation.
The program is meant to provide a full analysis of a two by r table. Mostly it concerns the description and analysis of differences in a dichotomous -percentage- outcome between various groups or empirical categories. The interest is then to study the presence or absence of a certain characteristic between various groups, for example, the difference in the proportion of smokers between different age groups or geographical regions. The usual contingency table analysis instruments such as chi-squares and various statistical tests are available. Additionally a few concepts from oneway analysis of variance are also applied, such as basic multiple contrasts and (LRX) variance analysis. A basic 2xr table is shown below. This table concerns two columns and five rows, the counted integer numbers found in the yellow boxes are the data used for analysis.
To do a similar analysis on data with a continuous dependent variable, such as weight in kilos or pounds, or length in cm or inches, do a oneway anova combined with the means procedure.Table1. Example of a 2xr table:
Active and non-active respondents |
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Active |
Not-active |
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very young |
10 |
24 |
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young |
15 |
15 |
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intermediate |
19 |
21 |
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old |
18 |
17 |
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very old |
22 |
14 |
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Data Input.
For the data input procedure two columns of individual level person or object data are required, the first column is considered to be an explanatory, multinomial, categorical, factor variable which explains a dichotomous numerical outcome or dependent variable in the second column. The factor variable in the first column can be a name, numerical or text, the outcome variable in the second column is always numerical, otherwise invalid.
Table Input.
You can also specify a table in the input field. A table concerns counted numbers such as in the yellow fields of the "Table 1. Example of a 2xr table" shown above. The table can be copied for example from a spreadsheet or word processor or the table can be typed in manually. The numbers in the input field have to be separated by spaces, or returns, or semicolons, or colons, or tabs, but can NOT be separated by comma’s or full stops. The table in the input field is read row wise, so first the males in the first row, than the females, end then the same for the second, the third and all the other rows. The table specification above gets precedence over the input field. Thus, if you have too much table in the input field the too much table is ignored, if you have too little table additional zero’s are added to the table generated for the next "check, edit and input, and specify analysis" web page. For this procedure you must first define the number of rows in your table. A table filled with zero’s having two columns and the number of rows you requested will be generated in a new webpage with as title "check, edit and input, and specify analysis" . You can edit data which was read from the input field or insert values. You can also limit the number of rows to exclude particularly high or low (missing) values. In the "check, edit and input, and specify analysis" web page you can check boxes indicating the procedures you want and by pushing the "calculate" button you get yet another webpage with the results of the analysis.Limitation.
The procedure is meant for relatively small tables. Number of rows is in principle limited to 120, but might be less dependent on your browser and other settings. Is also rather less with weighted data as more info has to be transferred.
Go to data input procedure
Go to table input procedure
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