| T O P I C R E V I E W |
| 19102208 |
Posted - 12/10/2008 : 05:45:47 AM
I have a question conerning the Mann-Whitney Test in Origin 8.
Consider I have two columns A and B.
I want to test A versus B.
I always get the error message
"Grouping range should have two levels".
How exactly do I place the columns?
What do I put in group range and what in data range?
Thanks for help. |
| 2 L A T E S T R E P L I E S (Newest First) |
| couturier |
Posted - 12/11/2008 : 2:25:26 PM
How about providing raw data/indexed data options (like in ANOVA) so it is not always needed to reorganize data ? |
| VincentLiu |
Posted - 12/11/2008 : 02:06:26 AM
Hi Matthias,
There are two ways to solve the problem.
Method 1
If you want to use the Mann-Whitney Test tool (Statistics: Nonparametric Tests: Mann-Whitney Test), you need to reorganize your data as the following image shows. And select col(B) as Group Range, col(A) as Data Range after you opened the tool.
Method 2
If you don't want to change your datasets' organization, you can change to use the (NPH) Two Independent Samples tool (Statistics: Nonparametric Tests: (NPH) Two Independent Samples). And set the dialog as the image shows
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