Replication

Recall that replication means you need to conduct an experiment with an adequate number of subjects to achieve an acceptable statistical power. Sample size and power will be discussed in more detail later in this chapter.

Let's examine the ToothGrowth dataset to make sure they followed the principle of replication. We'll use dplyr to do some exploratory data analysis (EDA). The data has already been loaded for you.

Это упражнение является частью курса

Experimental Design in R

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Инструкции к упражнению

Load the dplyr package.
Use count() to determine how many guinea pigs were given each supplement and dose.

Интерактивное практическое упражнение

Попробуйте выполнить это упражнение, дополнив этот пример кода.

# Load dplyr
___

# Count number of observations for each combination of supp and dose
___ %>% 
    ___

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