spx Prior 4 Week % Change Versus Next 4 week % change

Prior 4 Week % Change Versus Next 4 week % change:

As with stochastic, there was a direct, not an inverse, relationship, meaning that if the market fell sharply the prior week, it tended to fall sharply (on average) the next week. This relationship is weak, however, with an R2 of .008 and a correlation coefficient of only 8.7%.

	Summary Statistics:
	% change last 4w:	% change next 4w:
n:	386	386
Max:	13.2%	14.9%
Min:	-12.2%	-16.9%
Average:	0.8%	0.6%
Median:	1.0%	0.9%
	y = 9.15%x + 0.5%		R2 = .8%
	correlation:	8.7%

Sliced data:
		n:	From:	To:	y:
	Min-10%	39	-12.2%	-4.0%	-0.2%
	10-25%	58	-4.0%	-1.5%	0.4%
	25-50%	96	-1.5%	1.0%	0.6%
	50-75%	96	1.0%	3.1%	0.9%
	75-90%	58	3.1%	5.9%	0.0%
	90-Max	38	5.9%	13.2%	1.8%
		385

In fourths:
		n:	From:	To:	y:
	Min-25%	97	-12.2%	-1.5%	0.2%
	25-50%	96	-1.5%	1.0%	0.5%
	50-75%	96	1.0%	3.1%	0.9%
	75-Max	97	3.1%	13.2%	0.7%
		386

In thirds:
		n:	From:	To:	y:
	Bottom	128	-12.2%	-0.8%	0.3%
	Middle	127	-0.8%	2.5%	0.7%
	Top	131	2.5%	13.2%	0.8%
		386