Problem 3 : Find 2 columns that are correlated. Find 2 that aren't. Estimate the temp when the wind is 25 mph, with uncertainty
		Ozone	Solar.R	Wind	Temp	Day		T - line
		41	190	7.4	67	1		25.42394656
		36	118	8	72	2		21.80113052		From the correlations Temp vs Wind is correlated (p = 0.038 < 0.05) Ozone vs Wind is NOT (p=0.09 > 0.05). From the formula for the line, T = - 0.7246 * (25 mph) + 73.97 = 56 mph uncertainty in this due to T variation is about about 2 * stdev(T-line) = 10 But slope, intercept are also uncertain. So I'd up this a bit to something like T = 56 +- 15 deg or so. (That extra 5 deg is just a visual estimate from the plot.)
		12	149	12.6	74	3		20.35200411
		18	313	11.5	62	4		29.04676259
		23	313	14.3	56	5		33.39414183
		28	305	14.9	66	6		26.14850976
		23	299	8.6	65	7		26.87307297
		19	99	13.8	59	8		31.22045221
		8	19	20.1	61	9		29.7713258
		8	194	8.6	69	10		23.97482014
		7	225	6.9	74	11		20.35200411
		16	256	9.7	69	12		23.97482014
		11	290	9.2	66	13		26.14850976
		14	274	10.9	68	14		24.69938335
		18	65	13.2	58	15		31.94501542
		14	334	11.5	64	16		27.59763618
		34	307	12	66	17		26.14850976
		6	78	18.4	57	18		32.66957862
		30	322	11.5	68	19		24.69938335
		11	44	9.7	62	20		29.04676259
		1	8	9.7	59	21		31.22045221
		11	320	16.6	73	22		21.07656732
		4	25	9.7	61	23		29.7713258
		32	92	12	61	24		29.7713258
		28	66	16.6	57	25		32.66957862
		28	266	14.9	58	26		31.94501542
		28	100	8	57	27		32.66957862
		23	13	12	67	28		25.42394656
		45	252	14.9	81	29		15.28006166
		115	223	5.7	79	30		16.72918808
		37	279	7.4	76	31		18.9028777
			n	31
				r		r_err		p-value
		wind vs temp		-0.373276033		0.17227334		0.038608347		SIGNFICANT
		temp vs ozone		0.439335272		0.166814425		0.013406207		SIGNIFICANT
		temp vs solar		0.386536373		0.171262013		0.031715206		SIGNIFICANT
		ozone vs wind		-0.305524367		0.176816178		0.09463891		NOT SIGNIFICANT
													= T at 25 mph
												T = A * wind + B
												A	-0.724563207
												B	73.9696814
												wind	25
												temp	55.85560123
												4.966786831	T-line std dev