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.
The meadow vole (Microtus pennsylvanicus), sometimes called the field mouse or meadow mouse, is a North American vole found across Canada, Alaska and the northern United States.he meadow vole (Microtus pennsylvanicus), sometimes called the field mouse or meadow mouse, is a North American vole found across Canada, Alaska and the northern United States.