In banking exams we often come across bar graph questions. In IBPS PO and IBPS Clerk papers, we are required to solve maximum-minimum problems in Data Interpretation section. In these we are asked to calculate the differences from the values in the given graph.
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To sit and calculate each value individually could mean the difference between selection and disqualification in the exam. You will waste precious time. Instead use this simple visualization trick to quickly solve maximum-minimum problems in Data Interpretation.
You simply need to visualize the graph and find the answer. If you can’t find the perfect answer, you can even eliminate some options and it will be better.
Here is an example to make things clear.
Directions: Study the following graph and answer the questions that follow:
Number of appeared candidates and passed candidates (in hundreds) in a test from seven different Institutions.
Q1. In which institution is the difference between the appeared candidates and passed candidates the maximum?
5) None of these
Solution: Here the question asks about maximum difference.
In this Bar Graph, the difference in the heights of the bars of appeared candidates and the passed candidates for institute D is significantly larger than the differences of other institutes.
So, we can directly answer in favor of Institution D by simple visual detection.
Q2. In which institution is the difference between the appeared candidates and passed candidates the minimum?
5) None of these
Solution: Here the question asks about minimum difference.
In this Bar Graph, the difference in the heights of the bars of appeared candidates and the passed candidates for institute A is significantly smaller than the differences of the other institutions.
So, the answer can be directly said in favor of Institution A by simple visual detection.
Note: This method will not work if the bar graph is in the form of percentages.