Search found 202 matches
- Wed Jul 02, 2025 1:56 pm
- Forum: Module development
- Topic: Incorrect effect-size value in paired t-test
- Replies: 8
- Views: 75360
Re: Incorrect effect-size value in paired t-test
So I looked into the calculation of the cohen's d in the paired t-test and I think it's being calculated correctly at the moment. If you look at https://github.com/jamovi/jmv/blob/aa1f56e6a9ec06a9d5d92bbed08cb956463250c1/R/ttestps.b.R#L16-L17 and https://github.com/jamovi/jmv/blob/aa1f56e6a9ec06a9d5...
- Fri May 30, 2025 2:27 pm
- Forum: Help
- Topic: correlation plots
- Replies: 1
- Views: 18220
Re: correlation plots
Hi Oliver, The correlation matrix plots use the GGally R package in the background. To create the scatter plot with regression line the ggally_smooth function (see https://ggobi.github.io/ggally/reference/ggally_smooth.html ) is used. Here you can see that the interval around the regression line rep...
- Wed Mar 26, 2025 9:03 am
- Forum: Help
- Topic: Inconsistency in scale calculations
- Replies: 11
- Views: 130732
Re: Inconsistency in scale calculations
Hi everybody, So first let me reply to the following: That's one way to look at it. But the way I see it, the only correct way to reverse-code is to base it on the theoretical, not the actual range of the data. For example, for -2 to 2 scale [Strongly Disagree, Disagree, Neutral, Agree, Strongly Agr...
- Wed Feb 26, 2025 2:36 pm
- Forum: Help
- Topic: Ordinal Logistic Regression Model Comparisons
- Replies: 1
- Views: 66153
Re: Ordinal Logistic Regression Model Comparisons
Thank you for bringing this bug to our attention! I found where the problem was and fixed it in this Pull Request: https://github.com/jamovi/jmv/pull/427.
- Wed Feb 19, 2025 11:24 am
- Forum: Help
- Topic: Histogram density graph
- Replies: 7
- Views: 78848
Re: Histogram density graph
It's strange that it previously didn't happen with the same file, as the library that we're using to make these plots (ggrides) hasn't changed in over a year. I looked into the issue and it indeed has to do with groups having 2 or fewer data points. However, I looked into the issue and it seems that...
- Wed Dec 18, 2024 12:09 pm
- Forum: Help
- Topic: Bug in correlation heatmap?
- Replies: 4
- Views: 47303
Re: Bug in correlation heatmap?
Hi! I found the issue: it’s due to how each analysis handles missing values. The correlation matrix uses pairwise deletion, while the reliability analysis applies listwise deletion. Since your dataset has a lot of missing data, listwise deletion removes far more cases than pairwise deletion. When I ...
- Tue Aug 27, 2024 12:11 pm
- Forum: Help
- Topic: Can't Render Plot
- Replies: 8
- Views: 16487
Re: Can't Render Plot
So the problem was that we were passing on data objects in an inefficient way. I made an improvement to the library that should fix your issue (See https://github.com/jamovi/jmv/pull/412). Jonathon will push out an update for jamovi in the next couple of days.
Thank you for reporting this issue!
Thank you for reporting this issue!
- Tue Aug 27, 2024 8:42 am
- Forum: Help
- Topic: Can't Render Plot
- Replies: 8
- Views: 16487
Re: Can't Render Plot
Hi Jorge,
I'll have a look today to see what the problem is.
Cheers,
Ravi
I'll have a look today to see what the problem is.
Cheers,
Ravi
- Tue Jul 11, 2023 11:39 am
- Forum: Help
- Topic: Path diagram in CFA
- Replies: 2
- Views: 9186
Re: Path diagram in CFA
I think that probably the path between 7 and 8 is missing because the items overlap and therefore occlude the path that is drawn between them. I expect that if it were possible to increase the height of the plot (which is not possible in jamovi at the moment), the path between 7 and 8 would show up ...
- Fri Jun 16, 2023 1:30 pm
- Forum: Help
- Topic: How can I fix these three issues? - Reliability Analysis & Principal Component Analysis
- Replies: 6
- Views: 13870
Re: How can I fix these three issues? - Reliability Analysis & Principal Component Analysis
Hi Deniz, Maurizio is indeed right that in your first example ("Car_Level 1", "Car2_Level 1", "Car3_Level 1", and "Car4_Level 1") only 1 row/case remains after deleting all the missing values (jamovi uses listwise deletion in the reliability analysis), and as ...