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PatrickGiuliano
Community Trekker

Re: JMP is Not a Spreadsheet

Maybe one more way to help facilitate JMP adoption is to install the JMP add-in in MS Excel. It talks to JMP and has analysis icons from JMP within Excel, so that helps for people who really can't relinquish Excel. Excel is a wonderful tool as well and can complement and even supplement certain analyses in JMP where certain calculation options, for example, are not available. One simple example would be a test for equivalence under the assumption of unequal variance (which to my knowledge is not available in JMP). You can build an Excel spreadsheet for this spreadsheet in the special case of for example: if you were to find evidence to reject the assumption of unequal variance using the hypothesis tests for equal variance output.
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Paul_J
Community Trekker

Re: JMP is Not a Spreadsheet

If your talking about test for equivalence of means allowing unqual variances, I believe the can be done, but "indirectly".  Equivalence test of means (as, say 95% level) is given by (90%) confidence interval for difference in means.  Believe the t-test in the Fit Y by X platform gives that confidence interval allowing unequal variances,

PatrickGiuliano
Community Trekker

Re: JMP is Not a Spreadsheet

Thanks @Paul_J, you are right in that I could pull the CI from the 2 sample t-test assuming unequal variances within the Fit Y by X Platform and Compare it to zero to assess the statistical significance (or lack thereof).

What I'm actually talking about is the Equivalence test using TOST (two one-sided t-test approach) where you have to specify a practical difference threshold that defines the maximum difference on average, allowable between groups to be considered not practically important (and by default, that difference is symmetric about zero). For that particular method, there is no option for "unequal variances": the default is equal variance assumed.
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Paul_J
Community Trekker

Re: JMP is Not a Spreadsheet

Indeed, I've had quite a bit of success with the Graph Builder, ... as well as Control Chart Builder and Local Data Filter.  Many Excel users love the "pivot table feel" with power of graphics.

 

Another sucess I've had at showning value is replacing hours of manal copy-paste and cell formulating in Excel with seconds via a JMP script.

 

The Help and Books are great also!

 

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Evan_Morris
Community Trekker

Re: JMP is Not a Spreadsheet

Good stuff Mark. I think this is a challenging thing for some of the larger companies when they get their hands on JMP. The challenge may be one of communication. Folks come to them and say "hey, JMP is a great way to analytics better than what you are doing in Excel", which is very true, mostly, with the important caveats that JMP is not a spreadsheet and there are certain things that are much better to do in a spreadsheet.

But what the company may hear is "I can do everything I did in Excel better in JMP". I believe that this can result in some serious deployment heartburn as folks are tasked with transitioning things out of Excel into JMP when Excel still sits as the more fit-for-purpose tool.

One example from my own experience is discreet event simulation. Now if I'm doing any kind of heavy duty work there is more appropriate software for it, but for low-end back of the envelope queuing models I go straight to a spreadsheet program.

Monte-carlos in general I find to be somewhat evenly split. There are a lot of places where it's small enough I don't need to go to Python, but it's complex enough that its much easier to do it in a spreadsheet software than in JMP.

Linear programming as well. If it's a lightweight model I'm gonna run that in spreadsheet software. I'm not even certain JMP has that capability.

The best way to summarize the difference in my opinion is this: JMP is one of the best tools out there for doing a specific set of tasks, but it is not intended for everything. Excel is is a tool that can do entry level work on almost any task.  Or, maybe:  JMP can do a few things excellently.  Excel can do everything poorly.

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PatrickGiuliano
Community Trekker

Re: JMP is Not a Spreadsheet

Maybe JMP is a spreadsheet? Or at least it can be! What I've been doing of late is just using the cell shading (dark blue) to "hide" duplicated calculations that I am performing which automatically duplicate in all the rows of a given column. Works pretty well! Only thing I wish was that it was even easier to access column formulas than it is currently. Maybe instead of a couple clicks it could be accessed and you could be taken there directly with a single right click or some other shortcut. The handy thing about Excel is the ability to readily enter column formulas. JMP you can do the same once you get in there to the formula editor and you can even use the JSL, but it takes some time to even access the formula editor, especially if you're doing this for multiple columns in one data table.

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