Chi-Square Goodness-of-Fit
Chi-square = sum((observed - expected)^2 / expected) on k-1 df, the p-value from the chi-square CDF, and a reject / fail-to-reject verdict at alpha. Expected entered as counts or proportions; flags expected counts below 5. Per OpenIntro Statistics Ch. 6.
Audience
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Posture
Rough Logic answers the math question the working professional asks on the job. The site is a calm, fast, ad-free, account-free, ever-free reference. It does not interpret code. It does not replace the licensed professional. It does not store your inputs. The Authority Having Jurisdiction governs all installations and inspections.