Judd et al. "Data analysis",  Exhibit 5.7

/
			1	
	Y		X
	
/
	35.5	20.4
	55.6	28.1
	42.5	24.6
	26.5	18.4
	46.7	27.5
	51.8	34.6
	51.2	31.6
	50.7	24
	43.2	22.8
	38.3	23.1
	43.0	26.3
	42.3	20
	40.1	27.1
	39.4	17.1
	39.0	25.5
	43.9	27.3
	36.6	20.5
	30.2	22.5
	42.6	24.1
	43.8	32.3
	45.5	32.7
	42.1	23
	43.0	31.2
	26.3	18.7
	42.5	26.2
	40.6	23.8
	37.0	24.6
	41.0	19.3
	56.0	30.1
	47.8	30.1
	35.7	23.6
	39.8	28.7
	35.3	23.2
	37.7	22.6
	40.7	24.6
	34.3	22.5
	50.8	27.2
	40.1	24.3
	38.8	26.4
	32.0	19
	37.9	25.7
	36.3	22
	38.3	23.9
	48.4	26.4
	46.7	28.8
	44.3	31.9
	49.7	28.6
	34.3	15.3
	40.6	23.8
	44.1	20.6
/

/
			1
			0
			
/
			-1