Hans Engler

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274 reputation

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	location	Washington, DC
	age	59
visits	member for	2 years, 2 months
	seen	Apr 1 at 3:37
stats	profile views	54

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6 Answers

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5	Computing $(X^TX)^{-1}X^Ty$ in OLS
2	When is it appropriate to use PCA?
2	Solving a system of equation involving the chi-square distribution
1	Where to obtain sales data for individual transactions?
1	Formula for recommended sample size for multivariate testing

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274 Reputation

+20	When is it appropriate to use PCA?
+20	Solving a system of equation involving the chi-square distribution
+5	Where to obtain sales data for individual transactions?
+10	Where to obtain sales data for individual transactions?

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2 Questions

votes activity newest

5	Where to obtain sales data for individual transactions?
2	$\chi^2$ test for data from Dirichlet-multinomial distribution

13 Tags

5 matrix-inverse	2 pca
5 least-squares	1 dataset × 2
5 regression	1 distributions × 2
2 chi-squared × 2	1 multivariate-analysis
2 confidence-interval	1 sample-size

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