Skip to main content

Table 3 Mixture Models in Simulation Studies

From: Thinking outside the curve, part I: modeling birthweight distribution

Design

Description

Mixture Density

A

2 components

.120 f(x;2601,947) + .880 f(x;3186,457)

B

3 components

.041 f(x;1673,617) + .871 f(x;3162,455) + .088 f(x;3537,575)

C

4 components

.007 f(x;832,210) + .182 f(x;2772,740) + .758 f(x;3170,417) +

.052 f(x;3804,413)

D

5 components

.007 f(x;803,193) + .086 f(x;2323,631) + .678 f(x;3114,419) +

.214 f(x;3441,441) + .014 f(x;4142,428)

E

6 components

.006 f(x;752,160) + .032 f(x;1737,471) + .268 f(x;2829,442) +

.586 f(x;3215,373) + .099 f(x;3762,353) + .010 f(x;4337,387)

  1. Probability densities for normal mixture models used in our simulation studies are specified.