Anova (noun)

1. A statistical method used to compare the means of two or more groups.
2. A set of statistical tests that are used to determine whether there are significant differences between the means of two or more groups.

Origin:

Acronym for analysis of variance, from the latin "variantia" meaning variation.

Examples:

1. An ANOVA test was used to determine if there was a significant difference in the mean weight of the three groups of fish.
2. The ANOVA revealed a significant difference in the mean test scores between the two groups of students.
3. The ANOVA test showed that there was a statistically significant difference in the mean number of hours of sleep between the two groups.
4. The ANOVA was used to determine if there was a significant difference in the mean salary among the three different job positions.
5. The ANOVA test was used to compare the mean height of the two groups of plants.