Goodman and Kruskal's Gamma is a measure used to compare two sets of data and see how similar they are. It's especially useful when studying relationships between variables, like when people are asked different questions about the same topic. To figure out the Goodman and Kruskal's Gamma score, you compare the responses to the different questions and see if they match up. If they do, the score is high. If they don't, the score is low.