Answer:
The type of bar graph described in the question is called a "histogram."
Explanation:
A histogram is a graphical representation of data that consists of a series of rectangles. Each rectangle represents a specific class or interval of data. The height of each rectangle corresponds to the frequency or relative frequency of the class, which indicates how often data falls into that particular range.
In a histogram, the width of each rectangle is the same, and the rectangles touch each other to create a continuous visual representation of the data distribution. This is different from a regular bar graph, where the bars are usually separated by gaps.
The histogram provides a visual way to analyze the distribution of data and identify patterns or trends. It is commonly used in statistics and data analysis to display quantitative data, such as measurements or counts, in different categories or ranges.
For example, if we have a set of data representing the heights of students in a class, we can create a histogram to show how many students fall into different height ranges, such as 150-160cm, 160-170cm, and so on. The height of each rectangle in the histogram will represent the frequency or relative frequency of students in each height range, allowing us to easily interpret the distribution of heights in the class.