GtkAction *invoke_t_test_independent_samples_dialog;
GtkAction *invoke_t_test_paired_samples_dialog;
GtkAction *invoke_oneway_anova_dialog;
GtkAction *invoke_t_test_one_sample_dialog;
GtkAction *invoke_t_test_independent_samples_dialog;
GtkAction *invoke_t_test_paired_samples_dialog;
GtkAction *invoke_oneway_anova_dialog;
GtkAction *invoke_t_test_one_sample_dialog;