How does JASP handle missing values exactly ?

Curious1

I am learning stats by using this tool. Take Indepedent Samples T Test as an example. JASP has two options for Missing values:

1. Exclude cases analysis by analysis
2. Exclude cases listwise

Can someone give me a detailed explanation about what these two options do?

Thanks and regards.

AlexanderLy

Hi Curious1,

Here's a JASP file explaining the difference. Please let me know, whether it's clear.

Cheers,
Alexander

AlexanderLy

Sorry about that, both varE and varF should only have the fifth case removed. I was a bit too enthusiastic removing cases and I can't remove files once they have been uploaded. Please only consider exampleMissingCorrect.jasp

Curious1

Hi Alexander,

Thanks so much for helping me!

exampleMissingCorrect.jasp well explains "Exclude pairwise". Back to my question, do you happen to know what "Exclude cases analysis by analysis" and "Exclude cases listwise" mean?

Cheers!

AlexanderLy

Hi Curious1,

"Exclude cases analysis by analysis" is basically the equivalent of "exclude pairwise" and "exclude listwise" is the same as before. Here's the JASP file explaining what happens in the paired t-test (what you've seen before) and the independent t-test.

Please let me know whether it's clear.

Cheers,
Alexander

Curious1

Alexander,

Thanks for the follow up and examples. Your examples are really clear.

Again, thanks!

AlexanderLy

Glad to help! You can double click the data panel to access and edit the data set If it's not present it'll generate a data file for you Alternatively, here's the data file:

Cheers,
Alexander