Adapted from Dan Kennedy Baylor School Chattanooga, TN Simpson’s Paradox Adapted from Dan Kennedy Baylor School Chattanooga, TN

Is there discrimination in admissions? Simpson’s Paradox Is there discrimination in admissions? A college offers only two degree programs, one in electrical engineering and one in English. Admissions to these programs is competitive, and the women’s caucus suspects discrimination against women in the admissions process. Male Female Admit 35 20 Deny 45 40 Total 80 60 web.hcpss.org/~theimiller/Simpson’s_Paradox_Example.ppt

The College’s Defense Engineering English Male Female Admit 30 10 Deny Total 60 20 Male Female Admit 5 10 Deny 15 30 Total 20 40

Conclusion The English program is more difficult to get into than the engineering program. Because more females are applying to the program that is more difficult to get into, more females are being rejected than males.

Adapted from Dan Kennedy Baylor School Chattanooga, TN Bali High has an intramural volleyball league. Going into spring break last year, two teams were well ahead of the rest: Team Games Won Lost Percentage Spike 7 5 2 .714 Finesse 10 3 .700 Both teams struggled after the break: Team Games Won Lost Percentage Spike 12 2 10 .167 Finesse 1 9 .100 Adapted from Dan Kennedy Baylor School Chattanooga, TN

Team Games Won Lost Percentage Spike 7 5 2 .714 Finesse 10 3 .700 Team Games Won Lost Percentage Spike 12 2 10 .167 Finesse 1 9 .100 Team Games Won Lost Percentage Spike 19 7 12 Finesse 20 8 .368 .400 Despite having a poorer winning percentage than Spike before and after spring break, Finesse won the trophy!