Publications by Zaid Yousif, PharmD, MAS
Comparing Two Independent Continuous Variables and Nonparametric Tests
Learning Objectives Develop the ability to perform independent two-samples t-test with equal and unequal variance in normally distributed continuous data. Develop the ability to perform Wilcoxon signed-rank test and Wilcoxon rank-sum test for non-normally distributed continuous data. Sources Rosner, Bernard. Fundamentals of Biostatistics. Cen...
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One-Sample Hypothesis Testing
Learning Objectives Develop an understanding of standard normal distribution and t-distribution Develop a clear understanding of hypothesis testing Develop the ability to use sample data to conduct a formal hypothesis test of continuous data Load Libraries library(tidyverse) ## ── Attaching core tidyverse packages ────────�...
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Data Exploration
Learning Objectives Develop an understanding of basic data types and data structures Be able to calculate mean, median, variance, standard deviation, proportions, and frequencies Learn how to plot frequency histograms, box plots, bar graphs, and pie charts Lecture Link https://rpubs.com/zaidyousif/1089870 Load Libraries library(tidyverse) ##...
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Getting Started with R
lecture link: https://rpubs.com/zaidyousif/1089175 Course Objectives Understand the basics of data exploration and visualization Choose and apply appropriate statistical methods Interpret statistical results correctly Learning Objectives Install R and RStudio Install and load R load packages Load data into R Execute basic R functions Install R...
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Multiple Linear Regression
Learning Objectives Understand the basic principles of multiple linear regression Learn how to perform and interpret the results of linear regression Learn how to adjust for confounders Sources Rosner, Bernard. Fundamentals of Biostatistics. Cengage Learning, 2017 Triola, Mario F., and Laura Iossi. Elementary Statistics. Pearson, 2018 Rpubs ...
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Power Analysis and Sample Size Estimation
RPubs https://rpubs.com/zaidyousif/988269 Sources Triola, Mario F., and Laura Iossi. Elementary Statistics. Pearson, 2018 Learning Objectives Understand the definition and relationship between power, sample size, effect size, and significance level Learn how to calculate power and sample size for selected statistical tests Load Libraries lib...
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Data Exploration
Learning Objectives Develop an understanding of basic data types and data structures Be able to calculate mean, median, variance, standard deviation, proportions, and frequencies Learn how to plot frequency histograms, box plots, bar graphs, and pie charts Lecture Link https://rpubs.com/zaidyousif/791846 Load Libraries library(tidyverse) ## -...
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One-Sample Hypothesis Testing
Learning Objectives Develop an understanding of standard normal distribution and t-distribution Develop a clear understanding of hypothesis testing Develop the ability to use sample data to conduct a formal hypothesis test of continuous data Load Libraries library(tidyverse) ## -- Attaching packages --------------------------------------- tidy...
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Data Wrangling with R
Learning Objectives Learn how to pivot data frames wide and long. Learn how to how to select, filter, mutate, and summarise data Learn to work with factors with R *Tidyverse documentation (https://www.tidyverse.org/) RPubs https://rpubs.com/zaidyousif/850443 Load Libraries library(tidyverse) ## -- Attaching packages ------------------------...
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Analysis of Categorical Data
Learning Objectives Understand the difference between observed and expected frequencies Learn how to construct contingency tables Understand the difference between dependent and independent categorical data Learn how to perform Pearson’s Chi-Squared test, Fisher’s exact test, and McNemar’s test Sources Rosner, Bernard. Fundamentals of Bi...
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