Dear Charles, I am tremendously impressed by your Real-Statistics package, even though I have so far only learned to use a small part of it. To perform a non-parametric two independent samples test, it is better to use the T Tests and Nonparametric Equivalents data analysis tool. There is no error message ‘Invalid input range 1 selected’ for the Non-parametric Tests data analysis (although you can get such a message without the number “1” included). Here is a workaround: If you click on the Help button and then click on OK, when you return to the dialog box, the help text won’t be obscured. J, I am pleased that you are getting value from the website. Thank you for your feedback! It sounds like it might be helpful to connect you to one of our Office support agents.
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