Question

In a simple bar diagram, the heights of the bars are proportional to

• A. values of the attributes
• B. means of the attributes
• C. variances of the attributes
• D. medians of the attributes

Hint:

In a bar diagram, height is the only functional dimension, making it a one-dimensional diagram. In contrast, histograms utilize both height and width (two-dimensional).

Answer 1

The Correct Option is A

Step 1: Understanding the Concept:
A simple bar diagram is a one-dimensional graphical representation where data is represented by a series of rectangular bars of equal width.

Step 2: Detailed Explanation:
In a simple bar diagram, the width of the bars is arbitrary and uniform.
The parameter of interest is represented solely by the height (or length) of each bar.
Each bar's height is constructed to be directly proportional to the magnitude or value of the attribute/variable being plotted.
This allows direct visual comparison between different categories.
Thus, the heights of the bars are proportional to the values of the attributes.

Step 3: Final Answer
The correct option is (A).