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Regression inference
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Infants who cry easily may be more easily stimulated than others
Infants who cry easily may be more easily stimulated than others. This may be a sign of higher IQ. A snap of a rubber band on the sole of the foot caused the infants to cry. They later measured the children's IQ at age three years using the Stanford-Binet IQ test.
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Crying and IQ
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Explanatory variable Response variable Correlation: Coefficient of determination:
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Regression model Sample SD about residuals (standard error or SE)
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Slope inference Estimate of slope t* SE of slope 95% CI for true slope
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Interpretation of interval:
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