Publications by R on Stats and R
Getting started in R markdown
R Markdown: what, why and how? Before you start Components of a .Rmd file YAML header Code chunks Text Code inside text Images Tables Additional notes and useful resources Photo by Jon Tyson If you have spent some time writing code in R, you probably have heard of generating dynamic reports incorporating R code, R outputs (results) and text o...
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Correlogram in R: how to highlight the most correlated variables in a dataset
Introduction Correlation matrix Correlogram Correlation test Code {lares} package All possible correlations Correlation of one variable against all others Reference Introduction Correlation, often computed as part of descriptive statistics, is a statistical tool used to study the relationship between two variables, that is, whether and how stro...
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Correlogram in R: how to highlight the most correlated variables in a dataset
Introduction Correlation matrix Correlogram Correlation test Code Photo by Pritesh Sudra Introduction Correlation, often computed as part of descriptive statistics, is a statistical tool used to study the relationship between two variables, that is, whether and how strongly couples of variables are associated. Correlations are measured between ...
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Student’s t-test in R and by hand: how to compare two groups under different scenarios
Introduction Null and alternative hypothesis Hypothesis testing Different versions of the Student’s t-test How to compute Student’s t-test by hand? Scenario 1: Independent samples with 2 known variances Scenario 2: Independent samples with 2 equal but unknown variances Scenario 3: Independent samples with 2 unequal and unknown variances Scena...
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Student’s t-test in R and by hand: how to compare two groups under different scenarios
Introduction Null and alternative hypothesis Hypothesis testing Different versions of the Student’s t-test How to compute Student’s t-test by hand? Scenario 1: Independent samples with 2 known variances Scenario 2: Independent samples with 2 equal but unknown variances Scenario 3: Independent samples with 2 unequal and unknown variances Scena...
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The 9 concepts and formulas in probability that every data scientist should know
What is probability? 1. A probability is always between 0 and 1 2. Compute a probability 3. Complement of an event 4. Union of two events 5. Intersection of two events 6. Independence of two events 7. Conditional probability Bayes’ theorem Example 8. Accuracy measures False negatives False positives Sensitivity Specificity Positive predictive ...
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The 9 concepts and formulas in probability that every data scientist should know
What is probability? 1. A probability is always between 0 and 1 2. Compute a probability 3. Complement of an event 4. Union of two events 5. Intersection of two events 6. Independence of two events 7. Conditional probability Bayes’ theorem Example 8. Accuracy measures False negatives False positives Sensitivity Specificity Positive predictive ...
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How to perform a one sample t-test by hand and in R: test on one mean
Introduction Null and alternative hypothesis Hypothesis testing Two versions of the one sample t-test How to compute the one sample t-test by hand? Scenario 1: variance of the population is known Scenario 2: variance of the population is unknown Different underlying distributions for the critical value How to compute the one sample t-test in R? ...
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How to perform a one sample t-test by hand and in R: test on one mean
Introduction Null and alternative hypothesis Hypothesis testing Two versions of the one sample t-test How to compute the one sample t-test by hand? Scenario 1: variance of the population is known Scenario 2: variance of the population is unknown How to compute the one sample t-test in R? Scenario 1: variance of the population is known Scenario 2...
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Top 100 R resources on Novel COVID-19 Coronavirus
R Shiny apps and dashboards Coronavirus tracker Coronavirus dashboard from the {coronavirus} package COVID-19 Global Cases Visualization of Covid-19 Cases Modeling COVID-19 Spread vs Healthcare Capacity COVID-19 Data Visualization Platform Coronavirus 10-day forecast Coronavirus (COVID-19) across the world COVID-19 outbreak Comparing Corona traje...
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