Tabulation of Results
which_year x how_often
OftenRarely
Both1011
Differnt1615
Same2224


Tabulation of Expected Results
which_year x how_often
OftenRarely
Both10.2910.71
Differnt15.1815.82
Same22.5323.47


Statistical Results
Pearson's Chi-squared test
Chi Square Statistic0.13
Degrees of Freedom2
P value0.94