Category	Heard	PPB	Easy %	Medium %	Hard %
Fine Arts - Classical Music	54	12.96	89%	37%	4%
Fine Arts - Other Fine Arts	53	13.40	76%	45%	13%
Fine Arts - Painting & Sculpture	54	15.19	93%	54%	6%
History - American History	47	14.68	87%	40%	19%
History - European History	52	14.62	89%	40%	17%
History - Other History	57	14.91	88%	49%	12%
History - World History	48	14.38	88%	44%	13%
Literature - American Literature	50	14.80	96%	48%	4%
Literature - British Literature	54	15.93	98%	57%	4%
Literature - European Literature	55	16.73	95%	60%	13%
Literature - World Literature	54	16.85	94%	59%	15%
Mythology	49	15.10	92%	47%	12%
Other	56	14.46	93%	39%	13%
Philosophy	49	15.31	94%	51%	8%
Religion	52	14.23	79%	48%	15%
Science - Biology	56	13.57	93%	29%	14%
Science - Chemistry	52	13.27	90%	37%	6%
Science - Other Science	46	9.35	83%	7%	4%
Science - Physics	48	9.58	79%	17%	0%
Social Science	52	14.42	90%	44%	10%