Publications by Robb Sinn
Hypothesis Testing: Means - HW Version
I. Initialization Block Initializing RStudio The data set we will use primarily is Data3350 which was produced in 2015 during an undergraduate research project about personality and humor. The VarsData3350 PDF file has descriptions of each variable in the Data3350 file. Both are available for download in D2L. Be sure to put the Data3350 in your ...
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Linear Models and Multiple Regression
I. Initialization Block Initializing RStudio The data set we will use primarily is Data3350 which was produced in 2015 during an undergraduate research project about personality and humor. The VarsData3350 PDF file has descriptions of each variable in the Data3350 file. Both are available for download in D2L. Be sure to put the Data3350 in your ...
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Exploratory Data Analysis
I. Data Two key questions for analyses of data in statistics are: Shape? Outliers/skew? For shape, we would like to know whether the distribution is normal (bell-shaped). Is it uniform meaning all outcomes are equally likely? Is it some other known distribution like the binomial distribution? The most significant shape for introductory statisti...
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Wage Growth Analysis
The Populist Trump Economy Donald J. Trump campaigned in 2016 on tax cuts, deregulation, tariffs on foreign imports, exiting global trade treaties like TPP and renegotiating NAFTA. Trump claimed his approach would help U.S. wage earners by reversing the globalist trends that shipped middle class jobs overseas. To suggest that experts disagreed wo...
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Solutions: Homework Sets for Statistics
Initializing RStudio The code block below uses the library function to ensure that the Mosaic package is loaded and will import the data frames we have used in all modules: Data3350, Dolphin, Med, Perc, PercB. Please make sure all data sets are downloaded and placed in your working directory. library(mosaic) library(readxl) Data3350 = read_exce...
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Coding Tutorial: t-tests
I. Creating a function to evaluate \(t\)-tests from summary statistics only Neither native R nor its Mosaic package have versions of the \(t\)-tests for use when only the summary statistics are known. However, we can create them ourselves based on our statistics formulas. One-Sample \(t\)-test The one-sample \(t\)-statistic is given by \[t = \fr...
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