Data Interpretation
Bar Chart — Questions & Answers
A bar chart shows a value for each category by bar height. These questions ask you to read individual bars and then compute totals, averages, differences, ratios and percentage change across them.
- 5 solved questions
- Step-by-step AI walkthroughs
- Key formulas included
Key formulas
Percentage change from year A to year B: AB−A×100%
Average of a set of bars =number of barssum of the bar values
Ratio questions compare two bar values directly; simplify the fraction
Directions — study the data below
Revenue from Handicraft Exports (₹ crore), 2015–2020
The bar graph shows a company's annual revenue from handicraft exports, in ₹ crore, for six consecutive years. Study it and answer the questions below.
Underlying data
| Year | Revenue (₹ crore) |
|---|---|
| 2015 | 6 |
| 2016 | 9 |
| 2017 | 12 |
| 2018 | 10 |
| 2019 | 16 |
| 2020 | 19 |
5 solved Bar Chart questions
What was the total revenue from handicraft exports over the six years (in ₹ crore)?
Solution — answer B
Add the bar values: 6+9+12+10+16+19=72 ₹ crore.
4 steps · reveal one at a timeStep 1: Understand the Goal
The question asks for the total revenue from handicraft exports over a period of six years. This means we need to sum up the revenue for each individual year.
Step 2: Identify Annual Revenues
We need to identify the revenue for each of the six years. From the data provided (likely a bar chart or table), these values are 6,9,12,10,16, and 19 ₹ crore.
Step 3: Calculate Total Revenue
Now, we add these annual revenues together to find the total. The sum is 6+9+12+10+16+19=72 ₹ crore.
Step 4: The answer
So the answer is (B) 72. The total revenue from handicraft exports over the six years is 72 ₹ crore, which matches this option.
In which year was the revenue the highest?
Solution — answer D
The tallest bar is 2020, at ₹19 crore.
4 steps · reveal one at a timeStep 1: Understand the Goal
The question asks us to find the year when the company's revenue was the highest. We need to identify the year associated with the maximum revenue value.
Step 2: Examine the Data
Look at the provided chart, which displays revenue for each year. Each bar represents the revenue for a specific year, usually indicated on the horizontal axis.
Step 3: Identify Highest Revenue
Find the bar that is the tallest on the chart. This tallest bar corresponds to the year with the highest revenue. In this case, the tallest bar is for the year 2020, showing a revenue of Rs19 crore.
Step 4: The answer
So the answer is (D) 2020. The year 2020 has the tallest bar on the chart, indicating the highest revenue.
What was the average annual revenue over the six years (in ₹ crore)?
Solution — answer C
Average =672=12 ₹ crore.
4 steps · reveal one at a timeStep 1: Understand the Goal
The question asks for the average annual revenue over a period of six years. To find the average, we need the total revenue and the number of years.
Step 2: Find Total Revenue
First, we sum the revenues for each of the six years. From the provided data (not shown here but used in the calculation), the total revenue over the six years is 72 ₹ crore.
Step 3: Calculate the Average
Now, divide the total revenue by the number of years. The number of years is 6. So, the average annual revenue is Average=Number of YearsTotal Revenue=672 ₹ crore.
Step 4: The answer
So the answer is (C) 12. Performing the division, we get 72÷6=12. The average annual revenue is 12 ₹ crore.
What was the percentage increase in revenue from 2018 to 2019?
Solution — answer C
The rise is 16−10=6 on a base of 10, so 106×100=60%.
4 steps · reveal one at a timeStep 1: Identify Revenue Figures
First, we need the revenue for 2018 and 2019. Let's assume the revenue for 2018 was 10millionandfor2019itwas16 million, based on the problem's context.
Step 2: Calculate the Increase
Next, find the absolute increase in revenue. Subtract the earlier year's revenue from the later year's revenue: 16−10=6. The revenue increased by $6 million.
Step 3: Calculate Percentage Increase
To find the percentage increase, divide the increase by the original (2018) revenue and multiply by 100. The formula is Original RevenueIncrease×100%. So, 106×100%=0.6×100%=60%.
Step 4: The answer
So the answer is (C) 60%. The revenue increased by 6millionfromabaseof10 million, which represents a 60% rise.
The 2020 revenue was approximately what percent of the total revenue over the six years?
Solution — answer B
7219×100≈26.4%.
4 steps · reveal one at a timeStep 1: Find 2020 Revenue
First, locate the revenue for the year 2020. From the provided data, the revenue for 2020 is 19 units (e.g., millions of dollars).
Step 2: Calculate Total Revenue
Next, sum up the revenue for all six years to find the total revenue. Adding these values together gives a total revenue of 72 units over the six-year period.
Step 3: Calculate Percentage
To find what percent the 2020 revenue was of the total, divide the 2020 revenue by the total revenue and multiply by 100. This calculation is 7219×100.
Step 4: The answer
So the answer is (B) ≈26.4%. Performing the calculation 7219×100 gives approximately 26.388...%, which rounds to 26.4%.
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