Session Ready
Exercise

Using randomizations to assess assortativity

In this exercise you will determine how likely the observed assortativity in the friendship network is given the genders of vertices by performing a randomization procedure. You will randomly permute the gender of vertices in the network 1000 times and recalculate the assortativity for each random network.

Instructions
100 XP
  • Use assortativity() to calculate the assortativity of the graph object g1 based on gender using the object values calculated in the previous exercise, and assign this to the object observed.assortativity.
  • Inside the for loop calculate the assortativity of the network g1 using assortativity() while randomly permuting the object values each time with sample().
  • Plot the distribution of assortativity values from this permutation procedure using hist() and add a red vertical line for the original g1 network observed assortativity value that is stored in observed.assortativity.
Loading