Midterm
Solution to 3e.
			deviations		deviations squared
	data		x-mean		(x-mean)^2
	27		-0.1875		0.035156
	27		-0.1875		0.035156
	27		-0.1875		0.035156
	28		0.8125		0.660156
	27		-0.1875		0.035156
	25		-2.1875		4.785156
	25		-2.1875		4.785156
	28		0.8125		0.660156
	26		-1.1875		1.410156
	28		0.8125		0.660156
	26		-1.1875		1.410156
	28		0.8125		0.660156
	31		3.8125		14.53516
	30		2.8125		7.910156
	26		-1.1875		1.410156
	26		-1.1875		1.410156
total	435		0		40.4375
mean =	27.1875			s^2 =	2.695833
				s =	1.641899
			mean =	27.1875
			s =	1.641899