Missing values not recognised

Discuss the jamovi platform, possible improvements, etc.

by lekaicasi46 » Mon Dec 14, 2020 6:47 am

I have to say that our students love jamovi - who though I will ever say this about a statistic program. Really great job!

However, I mentioned this before that the definition of a missing value value is not carried over when computing a new variable or transforming a variable, leading to wrong results. And it looks like, this is not fixed in the latest version. Here the example. I create two new variables (A and B ) with some values and some missing values and define -99 as missing value and then compute a mean score. The missing value is recognized by jamovi for the variables A and B (in gray) but not for the new variable, resulting in including the -99 into the mean value:

1 2 https://omegle.onl/ https://vshare.onl/
2 -99

Using MEAN(A,B) will give:

A B score
1 2 1.5

2 -99 -48.5
Last edited by lekaicasi46 on Tue Dec 15, 2020 9:54 am, edited 1 time in total.
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by jonathon » Mon Dec 14, 2020 6:52 am


could you provide a screenshot or .omv file. this works for me:

Screen Shot 2020-12-14 at 17.50.55.png
Screen Shot 2020-12-14 at 17.50.55.png (81.59 KiB) Viewed 1475 times

kind regards

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by MAgojam » Mon Dec 14, 2020 1:04 pm

Hi, @ lekaicasi46.
Did you forget to enter the missing value to be considered in the "Missing values" box?
Take a look at the attached screenshot to see what happens if you don't enter it.
For variable A, -99 was entered, not for variable B.
Missing.png (47.79 KiB) Viewed 1466 times

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