As users of JMP Software we all develop our own opinions of what we like, what we don’t like, and how we think it should evolve.
So it’s very insightful to hear the perspective of the man behind the software – John Sall. He is hard to ignore, both physically (he is tall!) and intellectually (he is a giant!). But above all, he knows how we ought to be using the software whereas we just think we know. (more…)
In this final step of developing the oneway advisor I want to check the assumption of “independence”. Specifically I want to test whether there is any evidence of serial correlation on the residuals. (more…)
This is the sixth and penultimate step in constructing the oneway advisor. The advisor automates four tests associated with the assumptions of a oneway analysis of variance. In this step a test will be performed to assess whether the data within each level of the grouping variable have equal variance. (more…)
This is step 5 in the creation of the oneway advisor. In the previous step code was produced for testing whether the data within each level of the grouping (X) variable were normally distributed.
In this step code will be developed to determine whether the residuals are normally distributed. (more…)
It’s time to start developing the code that will check the assumptions of the oneway analysis. The first assumption is that data within each level of the grouping variable are normally distributed. (more…)
This is the third step in building the oneway advisor. In the first step the code for the main window was developed. In the second step the code was revised to handle access to the icon files.
The advisor will validate the assumptions associated with a oneway analysis of variance. It is assumed that the user has created the oneway analysis prior to running the advisor. In this step this assumption is validated. (more…)
This is the second step in building the oneway advisor. In step 1 the code for the main window was developed. But the window didn’t contain any icons – that’s the goal of this step. (more…)
In the previous post I illustrated a software advisor that can be used to automatically check the assumptions associated with a oneway analysis of variance. Now I am going to show you how you can write the code from scratch. (more…)
I want to show you an example of some software designed to help you be more productive and consistent in applying statistical tests. It’s designed to work along side a oneway analysis of variance and will automatically assess the assumptions associated with the analysis.