Table 2.

Descriptive statistics for the five singing measures in cents in the twin sample (n = 1189)

Singing measure	M	SD	Participants scoring <100 cents	Median
Single Note PD	96.99	118.47	69.0%	32.92
Familiar Tune PD	81.35	77.42	73.4%	51.83
Familiar Tune ID	61.91	46.80	86.0%	47.65
Unfamiliar Tune PD	114.66	119.31	64.1%	63.97
Unfamiliar Tune ID	108.70	90.59	58.5%	77.21

PD, pitch deviation; ID, interval deviation.