Statistical Analysis Stack Exchange
Statistical Analysis Stack Exchange

Questions tagged [jasp]

JASP is an open source statistical package designed especially with statistical non-experts in mind.

The JASP homepage can be found at https://jasp-stats.org/. JASP-specific support such as a FAQ and forums can be found at https://jasp-stats.org/support/.

9 questions
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Controlling for age in $t$-test

I have submitted a paper where I have performed a $t$-test between 2 groups A and B (coded as a dummy variable) to compare the mean of an Inattention scale derived from CFA analysis of the ADHD self-reported scale. We observed a significant…
fredooms
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Doubt on regression analysis interpretation

I have a dataset made of more than 10K observations. For each of them I know the value of a continuous variable (C1), and the value of three nominal variables: N1, which can take three different values (let's say "A", "B" and "C", corresponding to…
Nuthatch92
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ANCOVA with two (related) factors

I'm analysing data from a repeated-measures study, in two participant groups (call them patient and control groups). I have measured a dependent variable response. Both the patient and control groups received a range of quantifiable treatment doses…
CaptainProg
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Different results for Bayesian ANOVA in JASP and R (BayesFactor)

I computed Bayes Factors for a repeated measures ANOVA in JASP and the R package BayesFactor. There were two between-subjects groups (factor "group") with multiple measurements. However, the results were different: JASP output: Model comparison -…
user55987
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Is it okay to do a moderation anaylsis after the normality assumption failed (Shapiro Wilk)?

I am currently conducting a study on the suicide topic and entering the data analysis period. The Shapiro Wilk analysis reported that all my data failed the normality assumption. Most of the data's p coefficients were under 0.01 (I am using the p =…
need help
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2x2 repeated measures Bayesian ANOVA (interaction)

One reviewer asked me to include Bayesian analysis in my paper, but I am not sure that I am getting this right, so any help would be much appreciated. I paste the JASP output with BF10 and with BF01: I think my analysis shows the following: The…
user42691
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How to categorize data by combining the IVs (Independent Variables) to run a factorial ANOVA test on JASP?

How do I clean up a Likert scale data set taken from qualtrics survey platform to run a factorial ANOVA test to make it 2x2 (2 levels)? NOTE: Questions are randomized and structured as: High Normative, High R/S High Normative, Low R/S Low Normative,…
syahiruddin
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p-value for Shapiro-Wilk is high but data doesn't appear normal

I'm a beginner at stats and I'm trying to understand p-values for paired t-test and Shapiro-Wilks using the JASP Moon and Aggression data set (hope the screenshot resolution is ok - click on the image to zoom in): My understanding is that the null…
Chris Snow
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Bayesian ANOVA : simple main effect and post-hoc analysis

I'm conducting a two-way ANOVA with one within-subjects factor A (A1; A2) and one between-subjects factor B (B1; B2), but I would like conduct this with the bayesian approach. I did it with JASP. However, is it possible to compute simple main effect…
PM_cog
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