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d = read.csv("https://gist.githubusercontent.com/richarddmorey/f7c3ed9fe3f9f1fc0520f332b4a8efd7/raw/900d75f765a086dba65a316504c926da1c1e894a/golf.csv") | |
plot(d$score, d$size, xlab = "Course score", ylab = "Perceived size", axes = FALSE, ylim = c(0,9), xlim = c(60,140), pch = 19) | |
axis(2, at = 1:9, las = 1) | |
axis(1) | |
abline(lm(size~score, data = d)) | |
cor(d$size, d$score, method = "spearman") | |
# edge of significance | |
cor.test(d$size, d$score, method = "spearman") |
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## For the singer dataset | |
library(lattice) | |
data(singer) | |
## Get data ready (recode to two factors) | |
singer$female = factor(with(singer, grepl("S",voice.part) | grepl("A",voice.part))) | |
singer$high = factor(with(singer, grepl("S",voice.part) | grepl("T",voice.part))) | |
## We will test the hypothesis that the main effect | |
## of "high voice" is such that high voiced singers are shorter |
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### Data | |
t = 2 | |
N = 20 | |
rscale = sqrt(2)/2 | |
### Begin utility functions | |
posterior = Vectorize(function(delta, t, N1, N2 = NULL, rscale = sqrt(2)/2, log = FALSE){ |
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set.seed(123) # make reproducible | |
M = 10000 # Number of posterior samples | |
N = 20 | |
# sample the IV | |
x = rnorm(N, 10, 5) | |
# regression model for DVs | |
y = 100 + 3*x + rnorm(N,0,10) | |
## Delete missing data (3 in each) |
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### Utility functions | |
# Do a single t test simulation | |
# report the p value | |
ttest.sim = function(n, func, true.mean = 0, alpha = 0.05){ | |
x = func(n) - true.mean | |
t.test(x)$p.value | |
} | |
# Do a sequence of M t tests, report significance |
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getSpookyNums = function(M){ | |
s = tempfile() # to ensure no caching | |
my.url = paste0("http://richarddmorey.org/spooky.php?n=",M,"&",s) | |
as.numeric(readLines(my.url)) | |
} | |
x = getSpookyNums(10) |
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<?xml version="1.0" encoding="utf-8"?> | |
<distribution> | |
<names> | |
<shortname>Normal</shortname> | |
<longname>Normal</longname> | |
<alternate>Gaussian</alternate> | |
<id>normal</id> | |
</names> | |
<type>continuous</type> | |
<support> |
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--- | |
title: "Generated data demo" | |
output: | |
flexdashboard::flex_dashboard: | |
orientation: rows | |
vertical_layout: scroll | |
runtime: shiny | |
--- | |
```{r setup, include=FALSE} |
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devtools::source_gist("2bd1b7a409fad3d71fc2d60884c85e50", filename = "runJAGSDemo.R") |
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y = 13 | |
N = 35 | |
a = 1 | |
b = 1 | |
theta = seq(0, 1, len = 100) | |
likelihood = theta ^ y * (1-theta)^(N-y) #dbinom(y, N, theta) | |
prior = theta ^ (a-1) * (1-theta)^(b-1) #dbeta(theta, a, b) | |
posterior1 = prior * likelihood |