Senators have a strong impact on the selection of federal district judges

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A

For the voter precincts of a particular state, suppose the beta coefficient for the relationship between voter turnout (dependent variable) and per capita income (independent variable) is .50. Which of the following would be the most appropriate interpretation of this result?

A. An increase of one standard deviation in per capita income leads to an increase of .50 standard deviations in voter turnout. B. Each increase of one dollar in income results in an increase of .50 units of voter turnout. C. Each unit increase in voter turnout results in .50 per capita income. D. An increase of one standard deviation in voter turnout leads to an increase of .50 standard deviations in per capita income.