The following data on fertility rates were obtained from Eurostat on seven European countries in 2006. Suppose you obtain the following equation which predicts the total fertility rate using information on the mean age of childbearing: Y = 9.34 - 0.25x. What is the predicted total fertility rate for a country with a mean age at childbearing of 31.5 years? Why would it be inappropriate to predict, say, the TFR for a country with a mean age at childbearing of 22.7 years?
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?
TFR = 1.47. It would be inappropriate because 22.7 years fall outside of the bounds of the observed data.
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