Problem 22BB

Using Yates’s Correction for Continuity The chi-square distribution is continuous, whereas the test statistic used in this section is discrete. Some statisticians use Yates’s correction for continuity in cells with an expected frequency of less than 10 or in all cells of a contingency table with two rows and two columns. With Yates’s correction, we replace

Given the contingency table in Example , find the value of the χ2 test statistic using Yates’s correction. What effect does Yates’s correction have?

Example Are Four Quarters the Same as One Dollar?

Solution 22BB

According to the Yates’s correction for continuity, the test statistic is,

As we can see from the table that initially we failed to reject...