DRY examples

[codecov[bot]]

Codecov Report

Merging #196 (28e64cf) into main (650f67c) will not change coverage. The diff coverage is n/a.

@@            Coverage Diff            @@
##              main      #196   +/-   ##
=========================================
  Coverage   100.00%   100.00%           
=========================================
  Files           13        13           
  Lines          518       518           
=========================================
  Hits           518       518           

Impacted Files	Coverage Δ
R/centrality_description.R	100.00% <ø> (ø)
R/corr_test.R	100.00% <ø> (ø)
R/one_sample_test.R	100.00% <ø> (ø)

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