=+36. HDI. In 1990, the United Nations created a single statistic, the Human Development Index or HDI, to summarize the health, education, and economic status of countries.

Using data from 96 countries, here is a multiple regression model trying to predict HDI.

Dependent variable is: HDI R squared = 98.23%

s = 0.024 with 96 - 8 = 88 df Term Estimate Std Error t-Ratio P-value Intercept 0.09010 0.04208 2.14 0.0351 Expected years of schooling

(yrs) 0.01376 0.00176 7.79 60.0001 Life expectancy at birth

(years) 0.00333 0.00063 5.32 60.0001 Maternal mortality ratio (deaths per 100000