Tabulation of Results
pre x post2
	0	1	2	3	4
0	9	2	3	0	3
1	12	3	1	1	3

Tabulation of Expected Results
pre x post2
	0	1	2	3	4
0	9.65	2.3	1.84	0.46	2.76
1	11.35	2.7	2.16	0.54	3.24

Statistical Results
Pearson's Chi-squared test
Pearson Chi Square Statistic	2.4
Degrees of Freedom	4
P value	0.66