Overview

Tutorial

Example 1
Example 2
Example 3
Example 4
Example 5
Example 6
Example 7
Example 8
Example 9
Example 10
Example 11
Example 12
Example 13

IQ vs. Brain Size.

Source

• StatLib database

Files:

• IQ_Brain_Size.txt - Original file.
• iq_brain_size.tetrad.txt - Same data cleaned up for Tetrad.

Description:

Original blurb in Statlib: "This datafile contains 20 observations (10 pairs of twins) on 9 variables. This data set can be used to demonstrate simple linear regression and correlation. Source: Tramo MJ, Loftus WC, Green RL, Stukel TA, Weaver JB, Gazzaniga MS. Brain Size, Head Size, and intelligence quotient in Monozygotic Twins. Neurology 1998;50:1246-1252. (Therese.A.Stukel@Dartmouth.EDU) (MS Word format) [21/Jul/98][28/Nov/01] (5 kbytes)"

Exercise:

1. Create a data node and load iq_brain_size.tetrad.txt into the data node.
2. Create a search node and link the data node to the search node.
3. Run the PC algorithm on the data with a 5% significance level.