What you’ll learn to do: Understand the characteristics of a chi-square distribution

In the study of genetics, certain traits occur with specific ratios. For example, flies might have long wings or short wings and the ratio of the long to short is 1:3. To see if this 1:3 ratio is also true of fruit flies, a hypothesis test with the chi-square distribution can be used. In this section, you will learn about the general characteristics of the chi-square distribution and in the subsequent sections, you will learn about applications of the chi-square distribution.