Test statistics that follow a chi-squared distribution arise from an assumption of independent normally distributed data, which is valid in many cases due to the central limit theorem. A chi-squared test can be used to attempt rejection of the null hypothesis that the data are independent.
Voles, also known as mice, live in field, forest, and shrub habitats. Voles can cause extensive damage when they move into our turf and landscaped gardens in search of food and shelter. Voles do not hibernate and are active throughout the year. They can reproduce year round having many litters per year.
Numbers do not necessarily match those in definitions. See instructions at Help:How to check translations. Note: There is a systematic error in the entries below. Vole refers to hundreds of small rodent species living in all kinds of habitats. Many, but probably not all, of the translations refer to the water vole, which is just one of the many species. When translating vole into other languages, one should look for words that refer to the voles as a group. Further details can be found on the Wikipedia articles on vole and on many of the species.