From e5a4ad2f4703c8df25a53a0c66e0de0a1f1e8638 Mon Sep 17 00:00:00 2001 From: Elizaveta Karaseva Date: Mon, 25 Jun 2018 09:37:19 -0700 Subject: [PATCH] Minor typos fixed in a code chunk x1 and x2 variables were changed to g1 and g2 variables in a line 2 of the following code chunk to make it work: ## Mistakenly treating the sleep data as grouped ```{r} n1 <- length(g1); n2 <- length(g2) sp <- sqrt( ((n1 - 1) * sd(g1)^2 + (n2-1) * sd(g2)^2) / (n1 + n2-2)) --- 06_StatisticalInference/08_tCIs/index.Rmd | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/06_StatisticalInference/08_tCIs/index.Rmd b/06_StatisticalInference/08_tCIs/index.Rmd index 44d768a00..e207a183a 100644 --- a/06_StatisticalInference/08_tCIs/index.Rmd +++ b/06_StatisticalInference/08_tCIs/index.Rmd @@ -178,7 +178,7 @@ sp <- sqrt((7 * 15.34^2 + 20 * 18.23^2) / (8 + 21 - 2)) ## Mistakenly treating the sleep data as grouped ```{r} n1 <- length(g1); n2 <- length(g2) -sp <- sqrt( ((n1 - 1) * sd(x1)^2 + (n2-1) * sd(x2)^2) / (n1 + n2-2)) +sp <- sqrt( ((n1 - 1) * sd(g1)^2 + (n2-1) * sd(g2)^2) / (n1 + n2-2)) md <- mean(g2) - mean(g1) semd <- sp * sqrt(1 / n1 + 1/n2) rbind(