5. Correlational statistics
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Descriptive statistics analyze at single variables *
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Correlational statistics relate two variables *
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A positive correlation indicates that when x increases, y decreases *
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A zero correlation: no relationship between x and y *
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The following statistics are derived from regression analysis *
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In a regression of parental education on student performance, the intercept is the value of student performance when parents have completed primary education *
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In a regression of parental education on student performance, the slope measures changes in student performance for an increase in one year of schooling in parental education *
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