Publications by Nikki Faroughi
Lab 8
#Exercise 1 Sample Statistics #Exercise 2 We must assume that the technique used for the sampling method was random selection. It seems like a somewhat reasonable assumption because data was gathered from 57 different countries across five continents. #Exercise 3 download.file("http://www.openintro.org/stat/data/atheism.RData", destfile = "ath...
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Document
library(BSDA) ## Warning: package 'BSDA' was built under R version 4.2.2 ## Loading required package: lattice ## ## Attaching package: 'BSDA' ## The following object is masked from 'package:datasets': ## ## Orange tsum.test(18.3, 17.8, 33, 13.9, 19.1, 51) ## ## Welch Modified Two-Sample t-Test ## ## data: Summarized x and y ## t ...
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CH9 and 10
num <- c(.0219) .207+1.96*(num) ## [1] 0.249924 .207-1.96*(num) ## [1] 0.164076 births <- c(216,716) days <- c(2/7,5/7) chisq.test(births, p=days) ## ## Chi-squared test for given probabilities ## ## data: births ## X-squared = 13.294, df = 1, p-value = 0.0002662 ratio <-c(9/16,3/16,3/16,1/16) type <- c(111,37,34,8) chisq.test(type...
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quiz910
egg <- c(167,176,174,194) chisq.test(egg) ## ## Chi-squared test for given probabilities ## ## data: egg ## X-squared = 2.2321, df = 3, p-value = 0.5257 hv <- c(11,8) nhv <- c(52,54) com <- data.frame(hv, nhv) chisq.test(com) ## ## Pearson's Chi-squared test with Yates' continuity correction ## ## data: com ## X-squared = 0...
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EX2
h1 <- c(21, 10, 32, 60, 8, 44, 29, 5, 13, 26, 33) h2 <- c(86, 27, 10, 68, 87, 76, 125, 60, 35, 73, 96, 44) wilcox.test(h2, h1, exact=FALSE, conf.int=0.95) ## ## Wilcoxon rank sum test with continuity correction ## ## data: h2 and h1 ## W = 114.5, p-value = 0.003113 ## alternative hypothesis: true location shift is not equal to 0 ## ...
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Linear Regression lab
download.file("http://www.openintro.org/stat/data/mlb11.RData", destfile = "mlb11.RData") load("mlb11.RData") summary ("mlb11.RData") ## Length Class Mode ## 1 character character #Exercise 1: What type of plot would you use to display the relationship between runs and one of the other numerical variables? Plot this rela...
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Multiple Linear Regression Lab
download.file("http://www.openintro.org/stat/data/evals.RData", destfile = "evals.RData") load("evals.RData") #Exercise 1: Is this an observational study or an experiment? The original research question posed in the paper is whether beauty leads directly to the differences in course evaluations. Given the study design, is it possible to answe...
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