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Chapter 7: Problem 31

To create a bar chart with the bar function, what two arguments you must pass?

Short Answer

Expert verified
Answer: The two primary arguments required by the bar function to create a bar chart are: 1. An array or list of categories for the x-axis, which represent the groups or variables for which the data has been collected. These categories can be either a range or list of integers or categorical data like labels or names. 2. An array or list of values for the y-axis, which correspond to the height of the bars. These values are either frequencies or percentages, depending on the dataset, and represent the number or proportion of observations under each corresponding x-axis category.

Step by step solution

01

Introduce the bar function

The bar function is commonly used in statistical and mathematical programming languages to create bar charts, also known as bar graphs or bar plots. It is a graphical representation of data using rectangular bars, where the length of each bar represents the number or frequency of a particular category.
02

Describe the first argument

The first argument that the bar function requires is an array or list of categories or data points on the x-axis. These categories typically represent the groups or variables for which the data has been collected. In the case of a simple bar chart, the categories can be represented as a range or list of integers, while in other cases, categorical data like labels or names may be used.
03

Describe the second argument

The second argument needed for the bar function is an array or list of values that correspond to the height of the bars on the y-axis. The values should be either frequencies or percentages, depending on the dataset and the intended display. The heights of the bars represent the number or proportion of observations under each corresponding x-axis category. In conclusion, to create a bar chart using the bar function, you must pass two primary arguments: an array or list of categories for the x-axis and an array or list of values representing the heights of the bars on the y-axis.

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