How can you view the variables in a dataset using R?

To view the variables of the dataset, you can utilize the following methods.

1. You can use the names() function to retrieve the variable names of a dataset. For example, if the dataset is named “data,” you can use names(data) to view the variable names.
2. The colnames() function is used to view the column names of a dataset, commonly used for viewing the column names of a data frame. For example, if the dataset is named df, you can use colnames(df) to view the column names.
3. By using the str() function, you can view the structure of a dataset, which includes variable names, variable types, and the values of the first few rows. For example, to view the structure of a dataset named ‘data’, you can use str(data).
4. To view the first few rows of a dataset, you can use the head() function which by default displays the first 6 rows. For example, if the dataset is named df, you can use head(df) to see the first 6 rows of data.
5. The summary() function is used to provide a summary of statistical information for a dataset, including minimum, maximum, and median values for each variable. For example, if the dataset is named data, you can use summary(data) to view the summary statistics.

These methods can be selected and used in combination based on the type and needs of the dataset.