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A survey measures individual household income using a single question prone to recall error and rounding. The reliability coefficient (correlation between observed and true income) is r = 0.75. When estimating the correlation between income and years of education using this noisy income measure, what is the expected approximate relationship?
A survey measures individual household income using a single question prone to recall error and rounding. The reliability coefficient (correlation between observed and true income) is r = 0.75. When estimating the correlation between income and years of education using this noisy income measure, what is the expected approximate relationship?