Each population from which an ANOVA sample is taken is assumed to be:

1. ANOVA makes a shape assumption about each population. 2. There are five basic assumptions for a one-way ANOVA test. 3. Each population from which a sample is taken is assumed to be normal. 4. The populations are also assumed to have equal standard deviations. _Source: OpenStax Introductory Statistics 2e (CC BY 4.0), Ch 13 'The F Distribution and One-Way ANOVA', sections 13.1-13.4_