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Table of Contents Appendix Exercises Design a Data Set with Specific Correlations | |
See also: survey of exercises, correlation |
The goal of this exercise is to get acquainted with the correlation coefficient. Try to design an artificial data set containing 20 "measurements" on 4 variables (v_{1}..v_{4}). The variables v_{2} to v_{4} should be correlated to variable v_{1}, showing the following approximate (+/- 0.1) correlation coefficients r_{i,j}:
r_{1,2} = 0.0
r_{1,3} = 0.9
r_{1,4} = -0.9
Use the for
all the work. When ready, you should come up with the following items,
as well as answers to the following questions:
Last Update: 2006-Jän-18