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.
They NEVER eat plants; but the raised tunnels can make your lawn look really bumpy. Voles make lots of little holes in the ground; they look more like mice, but with really long weaseley snouts. Voles are a HUGE garden threat; they eat plants, and lots of 'em. Their favorite foods are tulip bulbs and the roots of plants like host as.