2) Medical researchers have noted that adolescent females are much more likely t

Question

2) Medical researchers have noted that adolescent females are much more likely to deliver babies than are adult females. Because low-birth-weight babies have higher irth-weight studies have examined the relationship between birth weight (in grams) annumb young mothers. Regression output for the data in one such study is given below a) Use the computer output to write an Predictor mother's age for babies born to Coef SE Coef equation for the LSRL which would predict birth weight from maternal age. Constant Maternal Age -1163.4 783.1 1.490.176 5.34 0.001 245.15 S = 205.308 R-Sq 78.1 R-Sq (adj) = 75.4% b) Interpret the slope of the least squares regression line in the context of this situation. c) Interpret the value of r2 in the context of this situation.

Explanation / Answer

a) Slope = 245.15

This tells that if age increases by 1 unit, wieght will increase by 245.15 units

b) R^2 = 78.1

This tells 78.1% of variation in weight is explained by age

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