The covariance between the mean age at childbearing and the total fertility rate is -0.06. How much predictive power does the mean age at childbearing have in predicting the total fertility rate? Calculate the coefficient of determination and interpret this quantity.
Mean Age at ChildbearingTotal FertilityRate Denmark30.291.83Ireland30.661.90Greece29.871.39Spain30.881.38France29.722.00Italy30.871.32Netherlands30.581.70 Mean30.411.65Standard Deviation0.47.28Variance.22.08
What will be an ideal response?
r2 = 0.18. About 18% of the variation in the total fertility rate is explained by taking into account the mean age at childbearing.
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