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Using Mroz's sample of married women in 1975, estimate the causal effect of a year of schooling on the log hourly wage of the women who worked, using variation in schooling that does not come from the woman's own ability.","requires":[],"runner":null,"sources":["mroz_1987.ex15_5.paper","mroz_1987.ex15_5.software"],"split":"design","suite":"paper_repro","tags":["paper_repro","mroz_1987","iv","design"],"target":"agent","tool":null,"truth":"Wooldridge, J. M. (2020). Introductory Econometrics: A Modern Approach, 7th edition. Boston: Cengage. Examples 15.1 and 15.5 (Mroz 1987, 'The Sensitivity of an Empirical Model of Married Women's Hours of Work', data set MROZ). Examples 15.1 and 15.5 are long-standing examples of the book (earlier editions not read), so 'published' (the edition read) understates how long the cells have been public. 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