Standard error via v-function

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by maumohr » Wed Apr 01, 2020 3:50 pm

Dear all,

I ran into an issue when I tried to calculate the standard error of the mean via the v-function.
Somehow, it is not returning the correct result, which it does if I use the Descriptive Statistics tool.
The VSTDEV in contrast seems to work just fine.

I have attached two images of the analysis.

In the first image, I am showing how I set up the VSE function for the variable 's', grouped by 'grade'. You can see that the v-function returns a value of 0.371 for the category '1st-grade'. The right bottom image shows the correct output of the Descriptive Statistics tool, which returns a value of 0.0389.

Standard error.PNG
Standard error
Standard error.PNG (192.66 KiB) Viewed 594 times

In the other image, I am showing how I set up the VSTDEV function for the variable 's', grouped by 'grade'. For this variable, the v-function and Descriptive Statistics tool agree.

Standard deviation.PNG
Standard deviation
Standard deviation.PNG (218.15 KiB) Viewed 594 times

I would appreciate to hear if I am doing something wrong or if the VSE function does not work properly.
Should these two calculations not lead to the same result?

Thank you very much.
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by jonathon » Wed Apr 01, 2020 10:43 pm

hey maurice,

you're quite right, there's a bug here. we'll push out a new version (hopefully in the next 24 hours) which fixes this.

with thanks

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