Upload your data and get a complete scale reliability — cronbach's alpha report. Free.
Free analyses run on up to 10,000 rows. Larger files are randomly sampled to that size — sign up to analyze your full dataset.
Running scale reliability — cronbach's alpha analysis...
Sent to — interactive charts, statistical results, R code, and AI insights.
Analyze another fileStandard-library analysis: are a set of survey or test items consistent enough to be summed into a single scale? Map three or more Likert or scale items and get Cronbach's alpha with its interpretation band and a 95% confidence interval, the standardized alpha from the mean inter-item correlation, a full item analysis (each item's mean, spread, corrected item-total correlation, and the alpha you would get if that item were removed), and the inter-item correlation summary. Built for survey validation: it tells you whether your scale holds together and which item to cut if it does not.
Interactive table visualization
Interactive horizontal_bar visualization
Interactive table visualization
Plain-English interpretation — what the numbers mean, what's significant, and what to do next.
Validate a survey scale before summing its items into a single index
See our FAQ for details on pricing, data privacy, and how the analysis works. Every report includes a Methodology section showing the statistical test, assumptions checked, and diagnostics run.
Run any analysis on your own data — validated R analyses, interactive reports, AI insights, and PDF export.
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