The following seaborn bar plot visualizes tip percent by day of the week from the restaurant data set. Tip percent is depicted by the length of each bar. How is it derived from the dataset?

Tip percent is calculated, it is an average value for each day of the week.

Tip percent is a column in a csv file and depicted for each transaction in the data source.

Tip percent is a sum of values in a data source.

Tip percent must first be calculated by a data analys