mass, g	wt, 10-2 N	distance, cm	x2	xy	y2	(y-y')2
50	49050	1.00	1.000	49050	2405902500	2852628100
60	58860	2.10	4.410	123606	3464499600	1900960000
70	68670	3.10	9.610	212877	4715568900	1141764100
80	78480	4.15	17.223	325692	6159110400	575040400
100	98100	6.00	36.000	588600	9623610000	19009600
120	117720	8.00	64.000	941760	13857998400	232867600
140	137340	10.00	100.000	1373400	18862275600	1216614400
150	147150	11.00	121.000	1618650	21653122500	1997196100
170	166770	13.15	172.923	2193026	27812232900	4135776100
			0.000	0	0
			0.000	0	0
sums	922140	58.50	526.165	7426661	108554320800	14071856400
SS			145.915	1432751	14071856400
n =	9	3570101.47	= SSE
mean =	102460	510014.50	= s2
t =	1.415	714.15	= s
slope =	9.82E+03	8.E+01	= ± interval	10-2 N/cm
mspr=	177.09