These data are used in the book "Computational Statistics" 
by G.H. Givens and J.A. Hoeting.

Name: bivariatecurve.dat
Chapter: 11, 12
Discussed in: Figure 11.18, Example 12.7, Problem 12.8

Description: Two hundred general bivariate data points (one per row).
There is no designation of predictor or response, but there is a clear
relationship between these two variables.

Variable labels: x1, x2