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Home › Exam notes › IBPS Banking › Caselet DI

Caselet DI

Quantitative Aptitude / DI · Mains Data Analysis

Useful for: IBPS Banking

Overview

A caselet gives data in a paragraph; converting it into a table makes every question quick.

Key points

  • Identify categories (e.g. male/female, departments, years).
  • Fill values given directly first, then derived ones.
  • Check that row and column totals match the given totals.
  • Percentages usually refer to a specific subgroup — note the base.
  • Keep units consistent.

Explanation

  • Use a two-way table for two classifications.
  • Write percentages as fractions where possible.
  • Answer all questions from the same table.
  • Recheck one total before submitting.

Step by step

  1. Translate the data or statement into numbers.
  2. Compute step by step with the right formula.
  3. Compare with options; check reasonableness.

Examples

  • 500 employees, 60% male; 25% of males and 40% of females are graduates → 75 + 80 = 155 graduates.
  • Of 200 students, 120 like tea; 70 like both tea and coffee; 30 like neither → coffee lovers = 200 − 30 − (120 − 70) = 120.
  • A shop sold 400 items: 30% online, rest offline; 25% of offline were returns → offline returns = 70.

Traps and advanced points

  • Trap: Applying a percentage to the wrong base.
  • Trap: Not using a table.
  • Trap: Totals not matching.

Quick revision

  • Paragraph → table.
  • Note the base.
  • Check totals.

Practice MCQs

  1. Four branch monthly transaction indices are 262, 186, 170, 300. Find the average.

    1. 229.5
    2. 206.55
    3. 252.45
    4. 275.4

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    Answer: (a) 229.5. Sum = 262 + 186 + 170 + 300 = 918; average = 918 ÷ 4 = 229.5.

  2. Four branch monthly transaction indices are 267, 206, 205, 190. Find the average.

    1. 260.4
    2. 217
    3. 195.3
    4. 238.7

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    Answer: (b) 217. Sum = 267 + 206 + 205 + 190 = 868; average = 868 ÷ 4 = 217.

  3. Four branch monthly transaction indices are 273, 200, 187, 268. Find the average.

    1. 255.2
    2. 232
    3. 278.4
    4. 208.8

    Read chapter notes · Similar questions

    Show answer

    Answer: (b) 232. Sum = 273 + 200 + 187 + 268 = 928; average = 928 ÷ 4 = 232.

  4. Four branch monthly transaction indices are 278, 210, 202, 228. Find the average.

    1. 275.4
    2. 252.45
    3. 206.55
    4. 229.5

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    Answer: (d) 229.5. Sum = 278 + 210 + 202 + 228 = 918; average = 918 ÷ 4 = 229.5.

  5. Four branch monthly transaction indices are 284, 204, 184, 306. Find the average.

    1. 220.05
    2. 268.95
    3. 244.5
    4. 293.4

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    Answer: (c) 244.5. Sum = 284 + 204 + 184 + 306 = 978; average = 978 ÷ 4 = 244.5.

  6. A survey table records units: North=118, South=211, East=269, West=382. Approximately what percentage of the total belongs to East?

    1. 37.83%
    2. 22.45%
    3. 27.45%
    4. 32.45%

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    Answer: (c) 27.45%. Total=980; East=269; share=269/980×100≈27.45%.

  7. A survey table records units: North=119, South=213, East=272, West=386. Approximately what percentage of the total belongs to West?

    1. 43.99%
    2. 63.91%
    3. 33.99%
    4. 38.99%

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    Answer: (d) 38.99%. Total=990; West=386; share=386/990×100≈38.99%.

  8. A survey table records units: North=120, South=215, East=275, West=390. Approximately what percentage of the total belongs to North?

    1. 13.64%
    2. 12%
    3. 7%
    4. 17%

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    Answer: (b) 12%. Total=1000; North=120; share=120/1000×100≈12%.

  9. A survey table records units: North=122, South=219, East=281, West=398. Approximately what percentage of the total belongs to East?

    1. 27.55%
    2. 32.55%
    3. 38.02%
    4. 22.55%

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    Answer: (a) 27.55%. Total=1020; East=281; share=281/1020×100≈27.55%.

  10. A survey table records units: North=123, South=221, East=284, West=402. Approximately what percentage of the total belongs to West?

    1. 39.03%
    2. 44.03%
    3. 34.03%
    4. 64.01%

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    Answer: (a) 39.03%. Total=1030; West=402; share=402/1030×100≈39.03%.

More topics in this chapter

Notes and questions are written by Kundali IQ for practice. They are not official papers; always check the latest official notification for the syllabus and pattern.