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🎯 Interval Plot
Each group's mean ± 95% confidence interval (t-test basis); compare group levels and uncertainty at a glance
Data (one group per line, values separated by space/comma; a single line = one group)
Notes
· Mean confidence interval = x̄ ± t(1−α/2, n−1)·s/√n; the narrower the interval, the more precise the estimate. If two groups' intervals barely overlap, their means may differ (use Hypothesis Testing / ANOVA for a formal significance check).
· The "Mean ± 1σ spread band" covers roughly where 68% of individual values lie; it shows process variation rather than estimation precision.
About Interval Plot Generator
Generate interval plots online: mean with 95% confidence interval error bars per group, t or normal distribution, for comparing group means.
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