Category: R
Type 3 ANOVA in R (with Examples)
Type 3 ANOVA in R can be calculated using Anova() function from CAR. The following shows the steps of doing it in R. Step 1: Prepare data in R The data has two categorical IVs (cities and stores) and one...
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Type 2 ANOVA in R (with Examples)
This tutorial shows how you can calculate Type 2 ANOVA in R with an example. Anova() in the package of Companion to Applied Regression (CAR) can be used to calculate Type 2 ANOVA in R. Note that, Anova() in CAR only...
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Type 1 ANOVA in R (with Examples)
This tutorial shows how to do Type 1 ANOVA in R. There are two functions in R that can be used to calculate Type 1 ANOVA, anova() or aov(). Note that, anova() here is different from Anova() in Companion to...
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What is dnorm in R (Examples)
This tutorial shows how you can use dnorm() in R with examples. The following is the syntax of dnorm(). dnorm(x, mean = 0, sd = 1, log = FALSE) mean: The mean of the normal distribution sample data. The default value is 0....
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Linear Regression with Categorical Variables in R (4 Steps)
For linear regression models, IVs can be either categorical, numerical, or a combination of them. This tutorial focuses on linear regression with categorical variable as IVs in R. For instance, the dependent variable Y is sales, whereas the independent variable...
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How to Plot Shaded Area in R (3 Examples)
This tutorial shows how to add shaded area under a normal distribution curve (i.e., bell curve) in R using examples.
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How to Use pnorm in R (Examples)
This tutorial shows the definition of pnorm() in R and how to use it with examples. pnorm() is used to return probability (p) for the given quantile (q). pnorm(q, mean, sd, lower.tail = TRUE, log.p = FALSE) q: the quantile (value on...
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Introduction of Normal Distribution Functions in R (Examples)
The tutorial provides examples for each of these 4 normal distribution functions in R. R has 4 normal distribution functions, including rnorm, dnorm, pnorm, and qnorm. The following table provides a summary for each of these 4 normal distribution functions...
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Probability Density Functions in R (Examples)
The tutorial shows examples of how you can use built-in Probability Density Functions (PDF) in R, including PDF for normal distribution (dnorm), uniform distribution (dunif), and exponential distribution (dexp). Example 1: PDF for Normal Distribution Normal distribution PDF dnorm() in...
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How to Use rnorm in R (Examples of Simulate Normal Distribution)
rnorm() in R can be used to simulate a sample of normal distribution data. This tutorial uses 3 examples showing how you can simulate normal distribution sample using rnorm(). In particular, rnorm has the following statement. rnorm(n, mean=0, sd=1) n: The...
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