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Top 2 = Delhi+Mumbai = 280+245 = 525. Bottom 2 = Chennai+Hyderabad = 145+120 = 265. Ratio = 525:265. GCD(525,265)=5. Simplified = 105:53. Both 525:265 and 105:53 are equivalent ratios.
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Common questions and clear answers for this topic.
Data Interpretation (DI) is a section in competitive exams like SSC, IBPS, and CAT where candidates analyze data presented in tables, bar graphs, pie charts, or line graphs to answer questions. It tests your ability to read, understand, and calculate from given data sets quickly and accurately.
The most common types of Data Interpretation are: 1) Table-based DI with rows and columns, 2) Bar Graph showing comparisons, 3) Pie Chart showing percentage distribution, 4) Line Graph showing trends over time, 5) Mixed/Combined DI with two or more charts. Table and bar graph questions are most frequent in SSC CGL and IBPS PO exams.
To solve DI questions quickly: 1) Read the question before the data to know what to find, 2) Identify the data type (table or chart), 3) Use approximation for large calculations, 4) Learn percentage-to-fraction shortcuts (25% = 1/4), 5) Practice mental maths daily. Aim to solve each DI set in 4-5 minutes in IBPS and SBI PO exams.
Data Interpretation means reading and understanding given data to answer specific questions, while Data Analysis involves deeper examination, finding patterns, and drawing conclusions. In exams like SSC CGL and CAT, DI focuses on calculation-based questions using provided charts and tables.
Important formulas for DI: 1) Percentage = (Part/Total) x 100, 2) Percentage Change = (Change/Original) x 100, 3) Average = Sum of values divided by Number of values, 4) Ratio comparison using cross multiplication, 5) Simple Interest basics. Mastering these formulas helps solve 80% of DI questions in SSC CGL and IBPS PO exams.
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