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**A.priori****Guest**

Hi, is it possible to use app builder to create apps that allow a user to input a score and then get a z-score? Can someone walk me through a simple example using app builder? thanks!

Hello,

Thanks for your interest in App Builder and register in this forum. Sorry, but I am not sure if can understand very well: are you talking about perform mathematic operations or I am completely wrong?

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**A.priori****Guest**

yes a z-score would be someone's score minus the mean, divided by standard deviation.

Hello,

A.priori wrote:

yes a z-score would be someone's score minus the mean, divided by standard deviation.

Are you try with the Math action?

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**A.priori****Guest**

No i'm not sure how to do that; I wonder if it can be done with lookup table?

Hello,

A.priori wrote:

No i'm not sure how to do that; I wonder if it can be done with lookup table?

Sorry, but I can't understand. The Math action allow us to perform mathematics operations using app's variables, for example. So, if you have in one variable an "score" value, and you want to perform some math operation with that variable, in principle you can use the Math action to do it. What I am missing? What a "lookup table" means for you?

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**A.priori****Guest**

So i have done this in Excel, where all scores of a test for a person of a certain age have a mean and standard deviation. A z-score would be someone's score minus their age group's mean divided by the standard deviation of that age group. I'm trying to think about how to better describe it...

something like http://www.excelfunctions.net/Excel-Z-T … ction.html

*Last edited by A.priori (2016-09-15 21:34:31)*

Hello,

Sorry, but even the power of the Math action doesn't have something like a "Excel Z-Test function". However, if you can found an implementation of that function in Javascript, then you can try to use it from your App Builder app.

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