Reading a Bar Graph and comparing two sets of data

What is a Bar Graph?

The pictorial representation of data in groups, either in horizontal or vertical bars where the length of the bar represents the value of the data present on the axis. They (bar graphs) are usually used to display or impart the information belonging to ‘categorical data’ i.e., data that fit in some category....

Reading a Bar Graph and comparing two sets of data

To read a Bar graph, we need to ask questions to ourselves looking at the displayed graph. Let’s understand reading a Bar graph through a fundamental example,...

Comparing two sets of data

Noticing the graph, explain the fruit liked by most people and the fruit liked by least people? The data displayed on the graph is easily comparable, it can be concluded that the most liked fruit is Guava and the least liked fruit is Apple. How many more people like Guava than Mango? There are 7 people who like guava and 5 who like Mango. Thus, we can say that there are 2 more people liking guava....

Properties of Bar Graph

All Bars have a common base. The length of each bar corresponds to its respective data mentioned on the axis (Y-axis for Vertical Graph, X-axis for Horizontal Graph). Each bar displayed has the same width. The distance between consecutive bars is the same...

Significance of a Bar Graph

It is always easier and more comfortable to visually understand something than to look at the large table of Numerical data. Bar graphs are extensively used in presentations and reports. It is very prominently used as it summarizes data and displays it in a frequency distribution....

Bar Graph Examples

Question 1: Draw the Bar Graph for the following table,...

What is a Histogram?

Histograms are the graphical display of data with the help of bars, the heights of the bars may vary due to different data. The similarity of a Histogram resembles a bar chart, but histogram groups numbers into different ranges. The length of each bar tells how many fall into each range, and it can be decided which ranges are to be used....

Construction and interpretation of Histogram

First, mark the class intervals on X-axis and frequencies on Y-axis. Make sure that the scale of both axes is the same. The class Intervals shall always be exclusive. Create bars with class intervals on the x-axis and corresponding frequencies on the y-axis. The length of each bar reflects the Frequency when intervals are equal. The area of each bar is the same as its respective frequency when intervals are unequal....

Difference Between Bar Graphs and Histograms

Feature Bar Graph Histogram Dimensionality One dimension Two dimensions Representation of frequency Lenth of the bars Area of the bar Significance of Bar Width No special significance Represents interval or bin Spacing between bars Bars are separated with equal spaces Bars are touching each other...

Histogram Examples

Question 1: In a Park, there are 28 trees of different heights, the heights can be measured in centimeters and the range of the trees lie between 100-350 cms. Draw the Histogram for the following data,...

Conclusion of Bar Graphs and Histograms

The article provides an explanation of bar graphs and histograms. Bar graphs are used to represent categorical data using rectangular bars. Histograms are used to depict the distribution of numerical data. The key difference between the two is that the bars in a bar graph represent individual categories, while the bars in a histogram represent ranges of values. Both bar graphs and histograms are useful tools for summarizing and visualizing data....

Bar Graphs and Histograms – FAQs

What is difference between histogram and bar graph?...