The students in a certain class were classified by hair color and eye color. The conventions used were: Brown and black hair were considered dark, and red and blonde hair were considered light; black and brown eyes were considered dark, and blue and green eyes were considered light. They collected the data shown in Table.

Observed data.

	Dark Eyes	Light Eyes
Dark Hair	28	15	43
Light Hair	9	23	32
	37	38	75

Are these traits independent? (See Example.)