Data Analysis
It's Now So Easy!
Free web-based PLS-SEM software. Run structural equation modeling, bibliometric analysis, eye-tracking research, qualitative data analysis, surveys and remote sensing — all in one platform, no installation required.
Built for academics, graduate students and independent researchers.
Analysis modules
11 modulesPick the analysis you need and get started. Every module runs in the browser and reports results to academic standards.
PLS-SEM
Structural equation modeling, path analysis, mediation and moderation tests. Automatic path diagrams and APA-formatted reports.
PLS-SEM V2
Redesigned interface: drag-and-drop model builder, indicator boxes, in-table interpretations and advanced fit indices.
Survey & Data Collection
Build surveys, share them and collect responses. Attention-check items ensure data quality. Export coded Excel directly to PLS-SEM.
Publication Guide
How to run an academic study end-to-end: step-by-step guide, research-type selector and AI mentor support.
Academic AI Assistant
Conference paper drafting, academic Q&A and paragraph rewriting — three tools bundled in a single module.
Bibliometric Analysis
Citation networks, co-authorship maps, keyword trends and performance analytics from Web of Science and Scopus data.
Meta-Analysis
Combine effect sizes across multiple studies and report with forest plots and heterogeneity tests.
Research Lab
Webcam-based eye tracking and facial expression analysis for experimental research, with heatmaps and attention metrics.
Qualitative Data Analysis
Theme coding, content analysis and code-tree visualization for interview and focus-group transcripts.
Remote Sensing
Disaster logistics and geographic data analysis. Satellite imagery processing and spatial modeling tools.
Making data analysis accessible for everyone
Data Analysis Robot (plssem.com) is a free, web-based platform built on open-source Python that automates Partial Least Squares Structural Equation Modeling (PLS-SEM). It runs entirely in the browser — there is nothing to install and no licence to buy. It is designed for academics, graduate students and independent researchers.
The platform runs the complete PLS-SEM analysis process: reliability and convergent validity (factor loadings, Cronbach's alpha, AVE, composite reliability), discriminant validity (HTMT, Fornell-Larcker, cross loadings), hypothesis testing (path coefficients, t and p values), and effect sizes (R², f², Q²). Mediation, moderation and bootstrapping are computed automatically, path diagrams are generated from your model, and results are exported in APA format as Word or Excel files.
Because it is browser-based, Data Analysis Robot works as a free alternative to desktop PLS-SEM software for researchers who need publication-ready output without a licence. Your data is processed for the analysis and is not stored on the platform.
Beyond PLS-SEM, the platform also offers Bibliometric Analysis, Eye-Tracking Research, Qualitative Data Analysis, Survey & Data Collection and Remote Sensing modules — covering every stage of your research in one place.
Which analyses can you run?
Use Data Analysis Robot for thesis and paper data analysis, PLS-SEM structural equation modeling, survey coding, mediation and moderation, reliability and validity testing, bibliometric mapping, meta-analysis and qualitative content analysis.
- Thesis and paper data analysis
- PLS-SEM structural equation modeling
- Survey data analysis and coding
- Mediation and moderation analysis
- Reliability and validity testing
- Bibliometric mapping and citation analysis
- Meta-analysis and effect sizes
- Qualitative content and thematic analysis