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.
5. Cancel. Ostriches live in the wild savanna areas of Africa, where there are very few trees and little water. Find out how ostriches are now farmed for meat in the United States with information from a science teacher in this free video on animal habitats.Part of the Video Series: Animal Habitats.. Cancel. Ostriches live in the wild savanna areas of Africa, where there are very few trees and little water. Find out how ostriches are now farmed for meat in the United States with information from a science teacher in this free video on animal habitats.