Introduction to Data Interpretation
Direction: A health drink company prepares the drink of three different flavours P, Q, R. The production of three flavours over a period of six years has been expressed on bar graph provided below. Study the graph and answer the questions.
 In which of the following years the percentage of rise or fall in production from the previous year is maximum for the flavour of Q?

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From the given bar diagram , we see
Production of flavour Q in 2007 = 50 lakh
Production of flavour Q in 2006 = 60 lakh
Decrease = Production of flavour Q in 2006  Production of flavour Q in 2007 = 60  50 = 10In year 2007 , Decrease % = Decrease × 100 Production of flavour Q in 2006
Correct Option: A
From the given bar diagram , we see
Production of flavour Q in 2007 = 50 lakh
Production of flavour Q in 2006 = 60 lakh
Decrease = Production of flavour Q in 2006  Production of flavour Q in 2007 = 60  50 = 10In year 2007 , Decrease % = Decrease × 100 Production of flavour Q in 2006 In year 2007 , Decrease % = 10 × 100 = 16 2 % 60 3
Direction: Barchart showing the Sales of Books (in 1000) from sixbranches B_{1} B_{2} , B_{3} , B_{4} , B_{5} and B_{6} of a Publishing Company in 2000 and 2001 is given below. Study the chart and answer the questions.
 What is the average sale of books from all the branches for the year 2000?

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According to given bar graph , we have
Total sale of books from all the branches for the year 2000 = 80 + 75 + 95 + 85 + 75 + 70 = 480
Number of branches = 6Required average = Total sale of books from all the branches for the year 2000 Number of branches
Correct Option: B
According to given bar graph , we have
Total sale of books from all the branches for the year 2000 = 80 + 75 + 95 + 85 + 75 + 70 = 480
Number of branches = 6Required average = Total sale of books from all the branches for the year 2000 Number of branches Required average = 480 = 80 6
 What percent of the average sales of branches B_{1} , B_{2} and B_{3} in 2001 is the average sales of branches B_{1} , B_{3} and B_{6} in 2000?

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As per the given bar graph , we have
Total sales of branches B_{1} , B_{2} and B_{3} in 2001 = 105 + 65 + 110 = 280
Number of branches = 3Average sales of stores B_{1} , B_{2} and B_{3} in 2001 = Total sales of branches B_{1} , B_{2} and B_{3} = 280 Number of branches 3
Total sales of branches B_{1} , B_{3} and B_{6} in 2000 = 80 + 95 + 70 = 245
Number of branches = 3Average sales of stores B_{1} , B_{3} and B_{6} in 2000 = Total sales of branches B_{1} , B_{3} and B_{6} = 245 Number of branches 3
Correct Option: A
As per the given bar graph , we have
Total sales of branches B_{1} , B_{2} and B_{3} in 2001 = 105 + 65 + 110 = 280
Number of branches = 3Average sales of stores B_{1} , B_{2} and B_{3} in 2001 = Total sales of branches B_{1} , B_{2} and B_{3} = 280 Number of branches 3
Total sales of branches B_{1} , B_{3} and B_{6} in 2000 = 80 + 95 + 70 = 245
Number of branches = 3Average sales of stores B_{1} , B_{3} and B_{6} in 2000 = Total sales of branches B_{1} , B_{3} and B_{6} = 245 Number of branches 3 Required percentage = 245 × 100 = 87.5% 280
 What is the ratio of the total sales of branch B_{2} for both the years to the total sales of branch B_{4} for both years?

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From the given bar diagram , we see
Total sales of branch B_{2} for both the years = 75 + 65 = 140
Total sales of branch B_{4} for both the years = 85 + 95 = 180
Required ratio = Total sales of branch B_{2} for both the years : Total sales of branch B_{4} for both the yearsCorrect Option: D
From the given bar diagram , we see
Total sales of branch B_{2} for both the years = 75 + 65 = 140
Total sales of branch B_{4} for both the years = 85 + 95 = 180
Required ratio = Total sales of branch B_{2} for both the years : Total sales of branch B_{4} for both the years
∴ Required ratio = 140 : 180 = 7 : 9
 Total sales of branch B_{6} for both the years is what percent of the total sales of branch B_{3} for both the years?

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On the basis of given graph in question ,
Total sales of branch B_{6} for both the years = 70 + 80 = 150
Total sales of branch B_{3} for both the years = 110 + 95 = 205Required percentage = Total sales of branch B_{6} for both the years × 100 Total sales of branch B_{3} for both the years
Correct Option: B
On the basis of given graph in question ,
Total sales of branch B_{6} for both the years = 70 + 80 = 150
Total sales of branch B_{3} for both the years = 110 + 95 = 205Required percentage = Total sales of branch B_{6} for both the years × 100 Total sales of branch B_{3} for both the years Required percentage = 150 × 100 = 73.17% 205