After reading this chapter, you should be able to perform the following:

• Describe the difference between a goodness-of-fit chi-square and a chi-square test of independence, and identify when to use each
• Describe the logic of the chi-square statistic
• Write the null and research hypotheses for goodness-of-fit chi-square and a chi-square test of independence
• Compute the chi-square statistic and determine if the null hypothesis should be rejected
• Summarize the results of a chi-square