Search found 288 matches
- Mon Jan 29, 2024 7:24 pm
- Forum: Module development
- Topic: Seeking general advice: to duplicate or not to duplicate existing functionality
- Replies: 1
- Views: 1866
Seeking general advice: to duplicate or not to duplicate existing functionality
I've created an R function for producing a particular style of editable, rich data plot. In the not-too-distant future I would to turn it into jamovi module. It could be a stand-alone module. Or in principle it could be something that somehow gets added onto jamovi's existing ANOVA, repeated-measure...
- Sun Jan 21, 2024 4:22 am
- Forum: Statistics
- Topic: Comparing two sigmoideal curves. Seeking advice.
- Replies: 3
- Views: 2609
Re: Comparing two sigmoideal curves. Seeking advice.
I think a rather complex approach would be to assume that each of the two functions is indeed sigmoidal, find and apply a transformation that appears to mostly linearize the functions, then use multiple regression to ascertain whether the slope for the orientation-by-stimulus interaction is signific...
- Sat Jan 20, 2024 3:27 pm
- Forum: General
- Topic: How determine numbers of trials to reach a good SEM
- Replies: 2
- Views: 2145
Re: How determine numbers of trials to reach a good SEM
Also note that, like an effect size, the standard error of measurement (SEm) does not change systematically with sample size. So adding or subtracting trials will not tend to make the SEm more 'good' or less 'good.'
- Sat Jan 20, 2024 4:20 am
- Forum: General
- Topic: How determine numbers of trials to reach a good SEM
- Replies: 2
- Views: 2145
Re: How determine numbers of trials to reach a good SEM
FYI: Standard error of the mean is an estimate of the variability of a sample mean, if many samples were drawn from the same population. It's not a reliability index. (Perhaps you're thinking of 'standard error of measurement' rather than the standard error of the mean.) It sounds like you want to a...
- Sun Dec 24, 2023 3:09 am
- Forum: Help
- Topic: Activating filter changes syntax
- Replies: 2
- Views: 1499
Re: Activating filter changes syntax
Looks like a bug to me. If I toggle back and forth a dozen times--between the filter being on versus off--the "variables" being "described" do change arbitrarily.
- Sat Dec 23, 2023 3:27 pm
- Forum: General
- Topic: Repeated measures ANOVA Posthoc ES
- Replies: 3
- Views: 2047
Re: Repeated measures ANOVA Posthoc ES
There is controversy as to whether it is correct or not. On grounds that the ANOVA assumes equal variances, some stats programs use the same pooled error term for each test in the set of post hoc tests. In such a situation, individual t tests would usually not produce the same result as ANOVA post h...
- Fri Dec 22, 2023 6:26 pm
- Forum: General
- Topic: Repeated measures ANOVA Posthoc ES
- Replies: 3
- Views: 2047
Re: Repeated measures ANOVA Posthoc ES
Personally, I would use the ANOVA posthocs output table to hand-calculate each Cohen's d effect size. Specifically, I would convert each 'SE of differences' to an 'SD of differences' by by multiplying the 'SE of differences' by the square root of the number of differences. I would then divide each m...
- Wed Dec 13, 2023 7:32 pm
- Forum: General
- Topic: Reliability analysis - SEM
- Replies: 3
- Views: 5029
Re: Reliability analysis - SEM
FYI, here's handy reference: https://www.researchgate.net/publicatio ... easurement
- Sat Dec 09, 2023 5:08 pm
- Forum: Help
- Topic: Excluding multiple rows with one filter
- Replies: 9
- Views: 29615
Re: Excluding multiple rows with one filter
Here's another example. It filters-out Row 2 ad Rows 5 through 7.
Code: Select all
not(ROW()==2) and not(ROW()>= 5 and ROW()<=7)
- Sat Dec 09, 2023 5:01 pm
- Forum: Help
- Topic: Excluding multiple rows with one filter
- Replies: 9
- Views: 29615
Re: Excluding multiple rows with one filter
To add to the examples provided earlier in this thread, the following filters-out Rows 2, 5, and 7:
ROW()!=2 and ROW()!=5 and ROW()!=7
ROW()!=2 and ROW()!=5 and ROW()!=7