df_cancer	df_cancer
df_income	df_income
df_stress	df_stress
seq_ttest	seq_ttest
seq_ttest_results-class	seq_ttest_results-class
sprtt	sprtt
[,seq_ttest_arguments-method	sub-seq_ttest_arguments-method
[,seq_ttest_results-method	sub-seq_ttest_results-method
