This data frame contains 75 obs. of 11 variables:
x1
: num, gross national product per capita.
x2
: num, consumption per capita.
x3
: num, percentage of the labor force in industrial occupations.
y1
: num, freedom of the press in 1960.
y2
: num, freedom of group opposition in 1960.
y3
: num, fairness of elections in 1960.
y4
: num, elective nature and effectiveness of the legislative body in 1960.
y5
: num, freedom of the press in 1965.
y6
: num, freedom of group opposition in 1965.
y7
: num, fairness of elections in 1965.
y8
: num, elective nature and effectiveness of the legislative body in 1965.